KR100429529B1 - Apparatus and method for gating data on a control channel in a cdma communication system - Google Patents

Abstract

The present invention relates to a method for transmitting control data in a forward and / or reverse channel in a base station and / or a terminal in a mobile communication system. In one embodiment, the base station determines whether to transmit the forward channel data to the terminal. If there is no data to be transmitted on the forward link for a set time, the base station drives the random positioner to determine the gating slot position, transmits control data at the determined slot position, and does not transmit the control data at other slot positions. The random position selector multiplies a system frame number by a specific integer to obtain x, selects N bits away from the x chip at the beginning of the scrambling code of the gating slot group in the previous state, and selects the selected bits. The gating slot position is determined by performing a process of determining a slot position to be controlled in the slot group by calculating the module by the number of slots constituting the slot group.

Description

Apparatus and method for intermittently transmitting and receiving control channel signal of code division multiple access communication system {APPARATUS AND METHOD FOR GATING DATA ON A CONTROL CHANNEL IN A CDMA COMMUNICATION SYSTEM}

Conventional code division multiple access (CDMA) mobile communication systems have provided voice-oriented services, but nowadays they are gradually developing to the IMT-2000 standard that enables high-speed data transmission as well as voice. Reached. The IMT-2000 standard CDMA mobile communication system is capable of providing high quality voice, moving picture, Internet search, and the like. The IMT 2000 standard mobile communication system transmits traffic data through a data channel during traffic data transmission in a data communication service, and transmits control data in pairs (serial or parallel) with the traffic data through a control channel. send. Herein, the traffic data is used as a term including all voice, image, packet data, and the like, and the control data is used as a term including control and signaling data related to transmission of traffic data.

The characteristic of data communication performed in the mobile communication system is that data generation occurs intensively at the moment, and a rest period frequently occurs so that a state where data transmission does not occur is long. Conventionally, the base station and the mobile station continuously transmit data of the control channel for a predetermined time even when there is no traffic data to transmit. That is, even when there is no traffic data to be transmitted, the base station and the mobile station continuously transmit data of the control channel without considering limited radio resources, base station capacity, power consumption of the mobile station, interference, etc., which causes traffic data to be transmitted again. This is to minimize time delay caused by synchronization reacquisition. If there is no data to be transmitted for a predetermined time, the base station and the mobile station release the data channel and the control channel. At this time, if the data to be transmitted again when the data channel and the control channel is released, the base station and the mobile station establishes a new data channel and control channel.

The mobile communication system of the IMT 2000 standard defines various states depending on the channel allocation status and the presence or absence of status information when performing data services such as packets as well as voice. State transition diagrams for cell connection, user data active part (RBA mode) and control bearer state (RBS mode) are described in 3GPP RAN TS S2 series (S2.03, 99.04). Is well represented.

1A illustrates a state transition in a cell connected state of a conventional mobile communication system. Referring to FIG. 1A, a state in a cell connection state may include a paging channel (PCH) state, a random access channel (RACH) / downlink shared channel (DSCH) state, and a random access channel (RACH) / forward (FACH) state as illustrated. Link Access Channel (DCH) status, DCH (Dedicated Channel) / DCH, DCH / DCH + DSCH, DCH / DSCH + DSCH Ctrl (Control Channel).

FIG. 1B shows the user data active substate (RBA mode) and the control maintenance substate (RBS mode) in the DCH / DCH, DCH / DCH + DSCH, DCH / DSCH + DSCH Ctrl states.

Packet data services, such as Internet access and file downloads, are often intermittent. Therefore, in the case of communicating the data, there is a period in which data is not transmitted until some packet data is transmitted and then next packet data is transmitted. In the transmission pause period of such data, the conventional mobile communication system must release the data channel or maintain the data channel. When the dedicated data channel is released, it takes a long time to reconnect, so that the service cannot be provided in real time. If the channel is kept intact, the channel is wasted. The downlink (forward link) from the base station to the mobile station and the uplink (uplink: reverse link) from the mobile station to the base station include the following physical channels. Here, descriptions of other physical channels not mentioned in the embodiment of the present invention will be omitted. The downlink channels include a dedicated physical control channel (hereinafter referred to as DPCCH) including pilot symbols for synchronization acquisition and channel estimation, and a dedicated data channel for communicating traffic data with a specific mobile station. Data CHannel, hereinafter referred to as DPDCH). The forward DPDCH is composed of traffic data, and the forward DPCCH is a control including a transport format combination indicator (hereinafter referred to as TFCI), a power control bit (hereinafter referred to as a TPC), a pilot symbol, and the like. Data is contained in one slot and multiplexed temporally in one slot. The uplink channels also include the dedicated control channel and the dedicated data channel.

In the embodiment of the present invention, one frame length is 10 msec, and one frame will be described with respect to 16 slots (one slot is 0.625 msec in length). In addition, in the embodiment of the present invention, one frame length is 10 msec, and one frame will be described with respect to 15 slots (one slot length is 0.667 ms). Here, the slot may have the same length as the power control group and may have a length different from that of the power control group. Here, it is assumed that the power control group (0.625ms or 0.667 msec) and the slot (0.625ms or 0.667 msec) have the same time interval. The slot includes pilot symbols, traffic data, rate information, power control command bits, and the like. The above values are selected only for the purpose of explanation of the invention and are not essential.

FIG. 2A illustrates a structure of a slot including the forward DPDCH and the DPCCH. In FIG. 2A, the DPDCH is divided into traffic data 1 (Data1) and traffic data 2 (Data2). However, depending on the type of traffic data, the traffic data 1 may not exist and only traffic data 2 may exist. In FIG. 2A, the structure of the DPCCH is configured in the order of TFCI, TPC, and PILOT. Table 1 below shows an example of symbols constituting the forward DPDCH / DPCCH field, and the number of TPC, TFCI, and pilot bits in one slot according to data transmission rate and spreading factor (SF), etc. Can change.

On the other hand, in the reverse link from the mobile station to the base station, unlike the forward DPDCH and DPCCH, the DPDCH and DPCCH are each separated by independent channel classification codes. FIG. 2B illustrates a slot structure in which the reverse DPDCH and the DPCCH are configured. Reference numeral 211 illustrates a slot structure of the DPDCH and reference numeral 213 illustrates a slot structure of the DPCCH. In FIG. 2B, the number of TFCI, TPC, and pilot bits in a slot may vary according to a situation such as a service option or a handover such as type of traffic data or transmission antenna diversity. Tables 2 and 3 show examples of symbols constituting the reverse DPDCH field and the reverse DPCCH field.

Tables 1, 2, and 3 illustrate the case where there is only one DPDCH as a traffic channel, and there may exist second, third, and fourth DPDCHs according to service, and forward and reverse DPDCHs may exist. Regardless, there may be multiple DPDCHs. In the following description of the base station transmitter and mobile station transmitter, a case where three dedicated data channel DPDCHs exist is described as an example, but the number of the DPDCHs is at least one, and the number is not limited.

3A shows a simplified configuration of a conventional base station transmitter.

Referring to FIG. 3A, the multipliers 111, 121, 131, and 132 input the outputs of the DPCCH and DPDCH data generators 101, 102, 103, and 104 that perform channel encoding and interleaving, respectively, and gain coefficients G ₁ of corresponding channels, respectively. , G ₂ , G ₃ , G ₄ . The gain factors G ₁ , G ₂ , G ₃ , and G ₄ may have different values depending on situations such as a class of service or a handover. The multiplexer 112 multiplexes the data of the DPCCH and DPDCH output from the multipliers 111 and 121, respectively, to have a slot structure as shown in FIG. 2A. The first signal converter 113 is a serial-to-parallel converter, and performs a function of distributing the output of the multiplexer 112 to I and Q channels. The second signal converter 133 and the third signal converter 134 perform the function of converting the data of the DPDCH ₂ and the DPDCH ₃ output from the multipliers 131 and 132 in parallel and distributing them to the I channel and the Q channel, respectively. The parallel-converted outputs are applied to corresponding multipliers 114, 122, 135, 136, 137, and 138, respectively, and multiplied with corresponding channelization codes C _ch1 , C _ch2 , and C _ch3 , respectively, to spread and channel. Are distinguished. In this case, orthogonal codes are used for the channel classification codes. In the multipliers 114, 122, 135, 136, 137, and 138, spread data multiplied with a channel division code is applied to the corresponding first summer 115 and second summer 123, respectively. The signals are added together to generate signals of I and Q channels, respectively. The I channel signals are summed and output from the first summer 115. The output of the second summer 123 that sums the Q-channel signals is phase shifted by 90 degrees at the phase shifter 124. The summer 116 sums the output of the first summer 115 and the output of the phase shifter 124 to generate a complex signal I + jQ signal. Multiplier 117 multiplies the complex signal by a PN sequence (C _scramb ) allocated to each base station to generate a complex scrambled signal, and a fourth signal converter 118 distributes the complex scrambled signal to I and Q channels. The output of the fourth signal converter 118 passes through the low pass filters 119 and 125 for each of I and Q channels to generate a signal with limited bandwidth. The outputs of the filters 119 and 125 are multiplied by the carriers in the multipliers 120 and 126 to be frequency upconverted, and the summer 127 sums and outputs the signals of the I and Q channels.

3b shows a simplified configuration of a conventional mobile station transmitter.

Referring to FIG. 3B, the multipliers 211, 221, 223, and 225 are channelization codes C corresponding to the outputs of the DPCCH and DPDCH data generators 201, 202, 203, and 204, respectively, which are encoded and interleaved. Multiply _ch1 , C _ch2 , C _ch3 , and C _ch43 to perform the function of distinguishing each channel and spreading data. An orthogonal code is used for the channel identification code. The data multiplied by the channel code is multiplied by the gain coefficients G ₁ , G ₂ , G ₃ , and G ₄ of the corresponding channels in the multipliers 212, 222, 224, and 226, respectively. The gain coefficients G ₁ , G ₂ , G ₃ , and G ₄ may have different values. The outputs of the multipliers 212 and 222 are summed by the first summer 213 and output as I-channel signals, and the outputs of the multipliers 224 and 226 are summed by the second summer 227 and output as Q-channel signals. The output of the second summer 227 is 90 degrees out of phase shifter 228. A summer 214 adds the output of the first summer 213 and the output of phase shifter 228 to generate a complex signal I + jQ signal. The multiplier 215 multiplies the complex signal by a PN sequence C _scramb allocated to each base station to generate a complex scrambled signal, and the signal converter 229 distributes the scrambled signal to I and Q channels. The output of the signal converter 229 passes through the low-pass filters 216 and 230 for each of the I and Q channels to become a signal with limited bandwidth. The output signals of the low pass filters 216 and 230 are multiplied by the carriers in the multipliers 217 and 231 to be shifted to the high frequency band, and the adder 218 sums and outputs the signals of the I and Q channels.

The transmission signal configuration of the conventional base station and mobile station is shown in Figs. 4A and 4B.

4A is a diagram illustrating transmission of a forward DPCCH and a reverse DPCCH signal in a control sustaining sub-state when transmission of the reverse DPDCH according to the conventional scheme is stopped. 4B is a diagram illustrating transmission of a forward DPCCH and a reverse DPCCH signal in a control holding sub-state when transmission of the forward DPDCH in the conventional manner is stopped.

As shown in Figs. 4A and 4B, the mobile station continuously transmits the reverse DPCCH in the control maintaining sub-state to avoid the resynchronization acquisition process at the base station. When there is no traffic data to be transmitted for a long time in the control maintenance sub-state, when the base station and the mobile station transition to a Radio Resource Control (RRC) Connection Released state (RSC), the reverse DPCCH stops transmitting. The mobile station increases the interference of the reverse link since the mobile station transmits pilot symbols and power control bits on the DPCCH until the transition. The increase in reverse link interference reduces the capacity of the reverse link.

The continuous transmission of the reverse DPCCH according to the conventional scheme is advantageous in that it can avoid the synchronous reacquisition process at the base station. However, as mentioned above, the capacity of the reverse link is reduced by increasing the interference on the reverse link. Let's do it. In addition, the transmission of consecutive reverse power control bits on the forward link results in increased interference and reduced capacity of the forward link. In addition to minimizing the time spent in the synchronization reacquisition process in the base station, it is necessary to minimize the increase in the interference caused by the transmission of the reverse DPCCH and the increase in the interference caused by the reverse power control bit transmission on the forward link.

The present invention relates to a data communication apparatus and method of a code division multiple access communication system, and more particularly, to an apparatus and a method capable of intermittently transmitting and receiving data depending on whether data is to be transmitted or not.

1A is a state transition diagram for a conventional packet data service.

1B is a transition diagram between a user data active portion state and a control holding portion state in a conventional DCH / DCH state.

2A is a slot configuration diagram of a forward DPDCH and a DPCCH in a code division multiple access communication system

2B is a slot configuration diagram of reverse DPDCH and DPCCH in a code division multiple access communication system;

3A is a simplified block diagram of a base station transmitter in a conventional code division multiple access communication system.

3B is a schematic block diagram of a mobile station transmitting apparatus of a conventional code division multiple access communication system.

4A is a diagram illustrating a configuration of a transmitter of a base station for intermittently transmitting data of a control channel in a code division multiple access communication system according to an embodiment of the present invention;

4B is a diagram showing the configuration of a transmitter of a mobile station for intermittently transmitting data of a control channel in a code division multiple access communication system according to an embodiment of the present invention.

4C is a block diagram illustrating a configuration of a base station transmitter according to another embodiment of the present invention for intermittently transmitting data of a control channel with an intermittent position selector in a code division multiple access communication system.

4D is a diagram showing the configuration of a mobile station transmitting apparatus according to another embodiment of the present invention for intermittently transmitting data of a control channel with an intermittent position selector in a code division multiple access communication system.

5A is a diagram illustrating transmission of a forward DPCCH and a reverse DPCCH signal when the reverse DPDCH transmission is stopped in a control maintaining sub-state of a conventional code division multiple access communication system.

5B is a diagram illustrating transmission of a forward DPCCH and a reverse DPCCH signal when the transmission of the forward DPDCH in the control maintenance substate of the conventional code division multiple access communication system is stopped;

Figure 6a is a signal transmission according to the regular or intermittent transmission pattern of the reverse DPCCH in the control maintenance sub-state of the present invention.

Figure 6b is another signal transmission according to the regular or intermittent transmission pattern of the reverse DPCCH in the control maintenance sub-state of the present invention.

FIG. 7A is a signal transmission diagram when a reverse DPDCH message occurs during intermittent transmission of a reverse DPCCH in a control maintaining sub-state of the present invention. FIG.

FIG. 7B is another signal transmission diagram when a reverse DPDCH message occurs during intermittent transmission of the reverse DPCCH in the control maintaining sub-state of the present invention. FIG.

8A is a diagram illustrating signal transmission of the forward and reverse links according to the suspension of forward DPDCH.

FIG. 8B is another diagram illustrating signal transmission of the forward and reverse links according to transmission stop of the reverse DPDCH. FIG.

FIG. 8C is another diagram illustrating signal transmission of the forward and reverse links according to transmission stop of the forward DPDCH. FIG.

FIG. 8D is another diagram illustrating signal transmission of the forward and reverse links according to the suspension of transmission of the reverse DPDCH. FIG.

FIG. 9A is a diagram illustrating signal transmission of the forward and reverse links according to transmission stop of the forward DPDCH (forward DPCCH intermittent transmission). FIG.

FIG. 9B is another diagram illustrating signal transmission of the forward and reverse links according to the transmission stop of the reverse DPDCH (forward DPCCH intermittent transmission). FIG.

10A is a block diagram of a base station transmitter according to another embodiment of the present invention.

10B is a block diagram of a mobile station transmitting apparatus according to another embodiment of the present invention.

11A is a signal transmission diagram according to a first embodiment of intermittent transmission of forward and reverse DPCCH of the present invention.

11B is a signal transmission diagram according to a second embodiment of intermittent transmission of forward and reverse DPCCH of the present invention.

11C is a signal transmission diagram according to a third embodiment of intermittent transmission of forward and reverse DPCCH of the present invention.

11D is a signal transmission diagram according to a fourth embodiment of intermittent transmission of forward and reverse DPCCH of the present invention.

12A is a signal transmission diagram according to a sixth embodiment of intermittent transmission of forward and reverse DPCCH of the present invention.

12B is a signal transmission diagram according to a seventh embodiment of intermittent transmission of forward and reverse DPCCH of the present invention.

12C is a signal transmission diagram according to an eighth embodiment of intermittent transmission of forward and reverse DPCCH of the present invention.

12D is a signal transmission diagram according to a ninth embodiment of intermittent transmission of forward and reverse DPCCH of the present invention.

13A is a conceptual diagram according to a first embodiment for determining a positioning bit during intermittent transmission of forward and reverse DPCCHs of the present invention;

FIG. 13B is a conceptual diagram according to a second embodiment of determining a positioning bit during intermittent transmission of forward and reverse DPCCHs according to the present invention; FIG.

FIG. 13C is a conceptual diagram according to a third embodiment of determining a positioning bit during intermittent transmission of forward and backward DPCCHs according to the present invention; FIG.

FIG. 13D is a conceptual diagram according to a fourth embodiment for determining a positioning bit during intermittent transmission of forward and reverse DPCCHs according to the present invention; FIG.

14A is a signal transmission diagram according to Embodiment 11 for intermittent transmission of forward and reverse DPCCH of the present invention.

14B is a signal transmission diagram according to a twelfth embodiment of intermittent transmission of forward and reverse DPCCH of the present invention.

14C is a signal transmission diagram according to Embodiment 13 of intermittent transmission of forward and reverse DPCCH of the present invention.

14D is a signal transmission diagram according to Embodiment 14 for intermittent transmission of forward and reverse DPCCH of the present invention.

FIG. 15A illustrates a method of extracting some sequences required to generate an intermittent transmission pattern from a reverse scrambling code. FIG.

15B illustrates a method of extracting an n-bit sequence required to generate an intermittent transmission pattern from a fixed sequence.

FIG. 16 is a diagram showing the configuration of an intermittent position selector for selecting the power control group intermittent position using the reverse scrambling code of FIG. 15A or the fixed sequence of FIG. 15B with CFN;

17A is a diagram illustrating a power control time relationship when 1/3 rate gating is applied in uplink and downlink.

17B is a diagram illustrating a power control time relationship when 1/5 rate gating is applied in uplink and downlink.

18A is a diagram illustrating a power control time relationship when 1/3 rate gating is applied only in downlink;

18B is a diagram illustrating a power control time relationship when 1/5 rate gating is applied only in downlink.

Accordingly, an object of the present invention is to provide an apparatus and method for intermittently transmitting data of a dedicated control channel when there is no data to be transmitted through a dedicated data channel so that a predetermined time elapses in a mobile communication system.

Another object of the present invention is to provide an apparatus and method for intermittently transmitting by controlling slot data of a dedicated control channel in an irregular pattern when there is no data to be transmitted through a dedicated data channel for a predetermined time in a mobile communication system.

It is still another object of the present invention to perform an intermittent transmission procedure when there is no data to be transmitted through a dedicated data channel for a predetermined time in a mobile communication system, and randomly intercept an arbitrary slot in a slot group in the slot group unit set during the intermittent transmission. An apparatus and method for transmitting are provided.

It is still another object of the present invention to perform an intermittent transmission procedure when a base station of a mobile communication system has no data to transmit through a dedicated data channel for a preset time, and randomly selects a random slot in a slot group on a slot group basis during the intermittent transmission. The present invention provides an apparatus and method for intermittently transmitting.

It is still another object of the present invention to perform an intermittent transmission procedure when a terminal of a mobile communication system receives a message for performing an intermittent transmission procedure from a base station, and randomly intercepts an arbitrary slot in a slot group on a slot group basis set during the intermittent transmission. An apparatus and method for transmitting are provided.

Yet another object of the present invention is to provide an intermittent transmission procedure when there is no data to be transmitted through a dedicated data channel for a preset time in a mobile communication system, and the slot group in which the connection frame number is set during the intermittent transmission. An apparatus and method for randomly intermittently transmitting a random slot in a slot group by unit are provided.

Another object of the present invention is to provide an apparatus and method for transmitting a pilot symbol of a slot located in front of a slot to be intercepted and a TFCI and TPC of a slot position to be intercepted when intermittently transmitting slot data of a dedicated control channel in a mobile communication system. In providing.

Another object of the present invention is to provide an apparatus and method for controlling transmission power of control data using power control information intermittently transmitted when intermittently transmitting data of a dedicated control channel in a mobile communication system.

The present invention relates to a mobile communication system of a code division multiple access method.

In describing the embodiments of the present invention, the components of the other drawings that perform the same operations as the aforementioned components use the same reference numerals as before. Differentiated processes from the conventional method are given new reference numerals, and description is mainly focused on differentiated points.

In the following description, "normal transmission" means continuous transmission of TFCI, TPC, pilot symbols, etc. included in the forward or reverse DPCCH without interruption. In the following description, 'Gated transmission' means that TFCI, TPC, pilot symbol, etc. included in the forward or reverse DPCCH are not transmitted in a specific power control group (or slot) according to a predetermined pattern. In a specific power control group (or slot), it means to transmit or transmit a pilot symbol included in the forward DPCCH and the TFCI and TPC bits of the next slot in which the pilot symbol is located according to a predetermined pattern. The interruption of transmission in the reverse DPCCH during the intermittent transmission may be all of the control data in the slot, such as TFCI, TPC, FBI, and pilot symbols in one power control group (or one slot) or some of these control data. In addition, in the following description, "interruption position selection" means selecting a position of a slot for transmitting data of a dedicated control channel in the state of performing an intermittent transmission function, and a slot selected as an interruption position transmits control data. Means slot. In addition, the term control data used in the embodiment of the present invention means data that is periodically transmitted in a predetermined pattern for a predetermined control between the base station and the mobile station, the term data refers to pure data transmitted bursting between the base station and the mobile station it means. Thus, the TFCI, TPC, FBI and pilot symbols are data included in the control data. Therefore, although the embodiment of the present invention describes a case of intermittently transmitting data of a dedicated control channel, the intermittent transmission method according to an embodiment of the present invention intermittently transmits control data of another channel periodically transmitting control data. The same may be applied to the case.

On the other hand, the operation of the intermittent transmission to be described below may be applied even when the intermittent transmission unit is the same as the slot unit, and may be applied even when the intermittent transmission unit and the slot unit are different. In the case where the intermittent transmission unit and the slot unit are different, it is preferable to intercept the TPC, the TFCI, and the pilot symbol differently. That is, the nth pilot symbol and the n + 1th TFCI and TPC may be set in an intermittent transmission unit.

In addition, in the embodiment of the present invention, since the performance of the beginning of the frame is very important, the TPC for power control of the first slot of the next frame is located in the last slot of the frame as much as possible. That is, the forward DPCCH and the TPC bits of the reverse DPCCH are positioned in the last slot of the n th frame, and the power of the first slot of the n + 1 th frame is used by using the TPC bits in the last slot of the n th frame. Allow power control.

In addition, in the mobile communication system according to an embodiment of the present invention, when performing intermittent transmission, the positions of the slots to be intermitted may be performed by the base station and the terminal using a predetermined regular pattern, and the slot group using the SFN and the CFN. It is also possible to use an irregular pattern to set arbitrary slots to intermittent positions within. In addition, in the mobile communication system, one frame of the dedicated data channel and the dedicated control channel may include a plurality of slots. In the embodiment of the present invention, it is assumed that one frame may be configured of 15 slots or 16 slots. In the following description, these structures will be used interchangeably. Here, an operation of performing intermittent transmission in a regular pattern will be described using an example in which one frame includes 16 slots. An operation of performing an intermittent transmission in an irregular pattern is described in the case of one frame consisting of 15 dom slots. An example will be described.

In the embodiment of the present invention, a process of performing 1/3 and 1/5 intermittent transmissions according to the uplink and downlink DPCCH structures shown in FIGS. 2A and 2B will be described. In the same manner as in 16, an intermittent position may be determined according to a random pattern.

Hardware configuration according to an embodiment of the present invention is as follows.

5A illustrates a configuration of a base station transmitter according to an embodiment of the present invention. The difference from the configuration of the conventional base station transmitter of FIG. 3A is that the output of the multiplier 111 is interrupted by the Gated Transmission Controller 141 for the forward DPCCH. That is, the Gated Transmission Controller 141 uses one slot of the forward DPCCH when the traffic data transmitted through the forward DPDCH does not occur for a certain period of time, or when the traffic data is not received through the reverse DPDCH for a certain period of time. The TFCI and TPC bits of the pilot symbol and the next slot are intermittently transmitted in a pattern agreed with the mobile station. In addition, the intermittent transmission controller 141 is a power control group (or pilot symbol, TFCI, TPC bit of the forward DPCCH in the radio bearer suspended mode (RBS mode) in which traffic data is not transmitted in the forward and reverse DPDCH) (or An entire slot) may be intermittently transmitted in the power control group (or timeslot) promised with the mobile station.

In the case where the forward and reverse directions intermittently transmit the DPCCH signal, the forward intermittent transmission pattern is the same pattern as the reverse intermittent transmission pattern, but an offset may exist between the two for efficient power control. The above offset may be given as a system parameter or may be known as a message indicating start of intermittent transmission. The message for notifying the start of the enforcement is to inform the start time and the interruption rate of the intermittent transmission by transmitting from the base station to the mobile station if the data to be transmitted through the dedicated data channel does not occur for a predetermined time. This message may also be transmitted from the mobile station to the base station. In addition, the message indicating the start of the enforcement may be determined and notified by the base station according to the enforcement request of the mobile station.

The intermittent transmission controller 141 may control the slot data of the dedicated control channel and may also control the control data of a plurality of slots. One slot of the dedicated control channel is composed of control data such as pilot symbol, TFCI, TPC (and additional FBI in case of UE). At this time, if the intermittent transmission function is performed, the intermittent transmission controller 141 may intermittently transmit all control data included in the slot of the intermittent position. Alternatively, the intermittent transmission controller 141 may precede the slot (n + 1 slot) of the intermittent position. Intermittent transmission of the TPC and TFIC of the pilot symbol in the slot (n-th slot) section and the slot (n + 1-th slot) section in the intermittent position may be performed. In the embodiment of the present invention, the latter method will be described as an example.

The intermittent transmission controller 141 also places a TPC for power control of the first slot of the next frame in the last slot of the frame as much as possible for the performance of the beginning of the frame. That is, the forward DPCCH and the TPC bits of the reverse DPCCH are positioned in the last slot of the n th frame, and the power of the first slot of the n + 1 th frame is used by using the TPC bits in the last slot of the n th frame. Allow power control. If the mobile station intermittently transmits and the base station does not intermittently transmit, the mobile station measures one DPCCH slot signal discontinuously and determines the power control bit. Then, the mobile station receives the DPCCH slot signal and receives the power control bit. The determined power control bit is transmitted to every slot until determined.

5B illustrates a configuration of a mobile station transmitting apparatus according to an embodiment of the present invention. The difference from the conventional mobile station transmitter configuration of FIG. 3B is that there is an intermittent transmission controller 241 for intermittent transmission of the reverse DPCCH. That is, the Gated Transmission Controller 141 performs pilot symbols, TFCI, FBI, A power control group (or an entire slot) including the TPC bit is intermittently transmitted from the power control group (or time slot) promised by the base station. Transmission signal configuration diagrams of a base station and a mobile station according to an embodiment of the present invention are as follows.

FIG. 6A illustrates a signal transmission diagram according to a regular or intermittent transmission pattern of a signal of a reverse DPCCH when there is no data to be transmitted on a data channel for a certain period according to an embodiment of the present invention. Reference numerals 301, 302, 303, and 304 of FIG. 6A illustrate different gating rates according to the ratio of duty cycles (hereinafter, referred to as DCs). In the following description, the duty cycle (DC) and the gating rate are used in the same meaning. Reference numeral 301 shows transmission of the reverse DPCCH without interruption as in the prior art, and reference numeral 302 denotes a power control group in which DC is 1/2 (only 1/2 of all slots in one frame are transmitted). Or time slots). Reference numeral 303 indicates that transmission is regularly performed in one slot (slots 3, 7, 11, and 15) per four slots when DC = 1/4 (only one quarter is transmitted in all slots in one frame). It is shown. Reference numeral 304 shows a regular transmission in one slot (slots 7 and 15) per eight slots when DC = 1/8 (only one eighth of all slots in one frame). In the embodiment of FIG. 6A, when the DC = 1/2 and 1/4, the intermittent transmission controller 241 of the mobile station regularly regulates the slots of the reverse DPCCH. You can also crack down on That is, in the case of DC = 1/2, one slot may not be transmitted regularly, and any adjacent slot may be continuously interrupted according to an irregular pattern. In the case of DC = 1/2, half of all slots can be transmitted continuously in the second half of the frame (slots 8 to 15). In the case of DC = 1/4, one-quarter of all slots may be transmitted continuously (slots 12 to 15) from 3/4 of the frame. In the case of DC = 1/8, 1/8 of all slots may be transmitted continuously (slots 14 to 15) from the 7/8 point of the frame.

The intermittent rate may be changed during the intermittent transmission period. In order to do this, the mobile station and the base station need to know which intermittent rate to use. The intermittent rate is determined at the start of intermittent transmission and may not be changed during intermittent transmission.

6B illustrates a signal transmission diagram according to a regular or intermittent transmission pattern of a reverse DPCCH according to another embodiment of the present invention. Reference numerals 305, 306, and 307 of FIG. 6B show different interruption rates according to the ratio of DC. Reference numeral 305 denotes two consecutive slots at regular positions (2 to 3, 6 to 7, 10 to 10) in the case of DC = 1/2 (only 1/2 is transmitted in all slots in one frame). 11, 14 through 15). Reference numeral 306 transmits two consecutive slots at regular positions (slots 6-7, slots 14-15) in the case of DC = 1/4 (only 1/4 of all slots in one frame). It is shown. Reference numeral 307 shows the transmission of two consecutive slots at regular positions (slots 14 to 15) in the case of DC = 1/8 (only one eighth of all slots in one frame). . In the embodiment of FIG. 6B, when the DC = 1/2 and 1/4, the intermittent transmission controller 241 of the mobile station regularly regulates the slot of the reverse DPCCH. You can also interrupt any slot. That is, in the case of DC = 1/2, two consecutive slots are not regularly transmitted by filtering two slots, and four consecutive slots (for example, 2 to 5) are continuously intermittently intermittently intersected with any adjacent slot in an irregular pattern. Slot 1) can be cracked.

A transmission signal configuration diagram of a base station and a mobile station according to another embodiment of the slot intermittent position (location for transmitting signals in one of three or five slots of consecutive slots) selection method is as follows. In the present embodiment below, an interruption rate 1/3 or 1/5 will be described as an example in the case of having 15 slots (slots) in one frame.

5C illustrates a configuration of a base station transmitter according to an embodiment of a slot intermittent positioning method. The difference from the configuration of the base station transmitter of FIG. 5A is that the position of the transmission slot is intermittent by the intermittent position selector 142 with respect to the forward DPCCH.

FIG. 5D illustrates a configuration of a mobile terminal transmitter according to an embodiment of a slot intermittent positioning method. Referring to FIG. The difference from the configuration of the mobile station transmitter of FIG. 5B is that the position of the transmission slot is intermittent by the intermittent transmission position selector 242 with respect to the reverse DPCCH.

Irregularly irregular positions of slots are intended to prevent adverse effects related to electromagnetic waves by the power of regular transmission signals. In another embodiment of the present invention, a method for irregularly transmitting a signal is illustrated as using a scrambling code.

One of the methods for selecting the intermittent position of the slot includes the system frame number (hereinafter referred to as SFN) of the forward signal immediately before transmitting the backward signal and the descrambling of the received signal at the mobile terminal. There is a use of the scrambling code generated to perform. The mobile station reads the code bits of a specific position of the scrambling code using the SFN of the forward signal and uses this value to determine the position of the slot to be intercepted of the transmission signal. Since the SFN continuously transmits a value of 0 to 71 to the base station broadcast channel, the mobile station can obtain the SFN by receiving data of the broadcast channel. In addition, the scrambling code may use a secondary scrambling code or a primary scrambling code. If the base station knows the position of the mobile station performing intermittent transmission, the base station can correctly receive the data intermittently transmitted by the mobile station. Therefore, it is advantageous that the transmitting and receiving sides are agreed to each other on the position of the intermittent transmission. For this arrangement, in the embodiment of the present invention, the base station and the mobile station use the same scrambling code having randomness and the SFN for reducing the periodicity to determine the position of the slot to be intermittently transmitted.

The intermittent transmission position selector 242 of the mobile station is a Gold Code, which is a real part of the system frame number (SFN) of the received signal and a scrambling code generated within itself to descramble the received signal. Irregularly determine the position of the slot to be intermittently transmitted using. In this case, the intermittent transmission position selector 242 selects one slot at any position among three slots (slot group) when DC = 1/3 using the SFN and specific bits of the gold code, and DC = 1. In case of 5, one slot of any one of five slots (slot group) is selected. Hereinafter, an interval corresponding to 3 slots and 5 slots, which is a selection range for DC = 1/3 and DC = 1/5, is called a gating section or slot group. This will be described with reference to FIGS. 13A, 13B, 14A, and 14B.

1. Multiply the integer between 1 and 35 by the SFN (System Frame Number: 0 ~ 71) of the received signal just before transmission. The result is called x (0≤x≤2485).

2a. In the case of DC = 1/3, one bit of the real part of scrambling code is selected at a position separated by x chips from the boundary of the gating group as shown in FIG. 13A. The selected bit can be used to determine the gating slot position within the next gating slot group. That is, the gating slot position in the current gating slot group is determined according to the selected bit in the previous gating slot group.

2b. When DC = 1/5, as shown in Fig. 13B, two bits of the real part of the scrambling code are selected at positions apart by x chips from the boundary of the eating group.

3a. If DC = 1/3, the position of the gating slot to be transmitted is determined using one selected bit. By using only one bit, an irregular positioning is made between two slot positions which are pre-defined among three transmittable slot positions.

3-b. If DC = 1/5, the position of the gating slot to be transmitted is determined using the two selected bits. The use of these two bits results in irregular positioning between four slot positions, which are pre-defined among the five transmittable slot positions.

4. When the SFN (System Frame Number) is changed, the process starts again from step 1 with a new value. At this time, the integer value multiplied in step 1 is kept intact.

The position of the transmission slot of the forward signal is applied to the system frame number (SFN) of the forward signal and the scrambling code of the forward signal in the reverse slot as described above. However, there may be a constant offset between the two for efficient power control. The above offset is given as a system parameter. In addition, the forward intermittent transmission pattern may be formed by using a predetermined position regardless of the reverse intermittent transmission pattern.

14A illustrates an embodiment of the slot intermittent positioning method when DC = 1/3. The intermittent transmitting position selector 242 of the mobile station receives the scrambling code of the forward signal and the SFN of the forward signal. One bit of the real part of the (Scrambling Code) is selected in the above order and used to determine a slot to transmit on the next gating slot group. In other words, the position of the slot to transmit in the current gating slot group (gating slot position) is determined based on one bit selected in the previous gating slot group. In general, the time difference in slot units between the gating slot group from the selected one bit and the current gating slot group is greater. The forward gating slot transmission of the base station is transmitted at a position separated by a slot determined from the gating slot position received on the reverse link.

14B illustrates an embodiment of the gating slot positioning method when DC = 1/5. The intermittent position selector 242 of the terminal receives the scrambling code and the SFN of the forward signal and selects two bits of the real part of the scrambling code. The two selected bits are used to determine the gating on slot of the next gating slot group. In other words, the location of the gating slot is determined based on the two bits selected within the previous gating slot group. In other words, the position of the slot to transmit in the current gating slot group (gating slot position) is determined based on one bit selected in the previous gating slot group. In general, the time difference in slot units between the gating slot group from the selected one bit and the current gating slot group is greater. The forward gating slot transmission of the base station is transmitted at a position separated by a slot determined from the gating slot position received on the reverse link.

As in the slot intermittent position selection method, in addition to the SFN, the number of the channel discrimination code of the forward signal that is applied differently to each mobile terminal may be additionally used to determine a specific portion of the gold code required for the position selection. As such, using the number of the channel identification code of the forward signal is to prevent the signals for the different mobile terminals of the forward signal to transmit the slot in the same time position.

In another slot intermittent positioning method, a decimal value corresponding to N bits of the SFN of the forward signal immediately before transmitting the reverse signal and the scrambling code generated to perform descrambling on the received signal at the mobile terminal. The position of the transmission slot is determined by using a value obtained by performing an operation of modulo-3 or modulo-5. This method can make the best use of a given gating interval to determine the location of the transmission slot.

As described above, another example of the first method of randomly determining a random slot as a slot to be controlled in units of a slot group according to an embodiment of the present invention is determined in the following order. This will be described with reference to FIGS. 13C, 13D, 14C, and 14D.

1. Multiply the integer between 1 and 35 by the SFN (System Frame Number: 0 ~ 71) of the received signal just before transmission. The result is called x (0≤x≤2485).

2a. In the case of DC = 1/3, as shown in FIG. 13C, N bits of the real part of scrambling code are selected at positions separated by x chips from the boundary of the gating group. The selected N bits can be used to determine the gating slot position in the next gating slot group. That is, the gating slot position in the current gating slot group is determined according to the selected N bits in the previous gating slot group.

2b. In the case of DC = 1/5, as shown in Fig. 13D, the N bits of the real part of the scrambling code are selected at positions separated by x chips from the boundary of the eating group. The selected N bits are the next gay ?? Used to determine the gating slot position in the slot group cold. That is, the gating slot position of the current gating slot group is determined based on the N bits selected in the previous gating slot group.

3a. In the case of DC = 1/3, the position of the gating slot to be transmitted is determined using a value obtained by performing modulo-3 operation on a decimal value corresponding to the selected N bits. Since the result value of the modulo-3 operation is one of 0, 1, and 2, each value designates a position of an arbitrary slot within a gating slot group.

3b. When DC = 1/5, the gating slot position to be transmitted is determined by using a modulo-5 operation on the decimal value corresponding to the selected N bits. Since a result value of the modulo-5 operation is one of 0, 1, 2, 3, and 4, each value designates a position of an arbitrary slot within a gating slot group.

4. If the SFN is changed, start again from step 1 above with a new value. At this time, the integer value multiplied in step 1 is kept intact.

In the above-described gating slot selection method, a position of a transmission slot is selected using 72 SFNs as a scrambling code of a receiving end. Therefore, the position of the transmission slot has a 720 msec period. In order to make the position of the transmission slot have a period of 720 msec or more, it is also possible to change the x value whenever the SFN becomes a specific value.

14C is an embodiment of a method of selecting a gating position of the gating slot group when DC = 1/3. The intermittent transmission position selector 242 of the mobile station inputs the scrambling code of the forward signal and the SFN of the forward signal, and selects N bits of the real part of the scrambling code. The selected N bits are used to determine the gating slot position of the next gating slot group. In other words, the gating slot position in the current gating slot group is determined by modulo-3 operation on the selected N bits in the previous gating slot group. In general, the time difference in slot units between the gating slot group from the selected N bits and the current gating slot group is greater. The forward gating slot transmission of the base station is transmitted at a position separated by a slot determined from the gating slot position received on the reverse link.

14D illustrates an example of selecting a gating position of the gating slot group when DC = 1/5. The intermittent transmission position selector 242 of the mobile station inputs the scrambling code of the forward signal and the SFN of the forward signal, and selects N bits of the real part of the scrambling code. The selected N bits are used to determine the gating slot position of the next gating slot group. In other words, the gating slot position in the current gating slot group is determined by modulo-5 operation on the selected N bits in the previous gating slot group. In general, the time difference in slot units between the gating slot group from the selected N bits and the current gating slot group is greater. The forward gating slot transmission of the base station is transmitted at a position separated by a slot determined from the gating slot position received on the reverse link.

Irregularly irregular positions of slots are intended to prevent adverse effects related to electromagnetic waves by the power of regular transmission signals. As a method for irregularly transmitting a signal intermittently transmitted, another embodiment of the present invention illustrates a method using a random sequence capable of distinguishing up and down frames together with a reverse scrambling code or a fixed sequence. Any number that can distinguish the up-down frame can be SFN or CFN (hereinafter referred to as CFN), or can be any system parameter that can distinguish other up-down frame. According to an embodiment of the present invention, the second method of intermittently transmitting a random slot in a slot group randomly gates a random slot in a slot group using the CFN. That is, according to the second method of random gating according to an embodiment of the present invention, CFN is used as an arbitrary number capable of distinguishing up and down frames, and the CFN is the same value used in all base stations talking to one subscriber station. It is represented by 8 bits and has a frame number of 256 (0-255).

15A illustrates an embodiment for explaining a method of extracting a partial sequence required to generate an intermittent transmission pattern from a reverse scrambling code. The scrambling code of the reverse signal is a scrambling code used to distinguish a user equipment (hereinafter referred to as UE) in a mobile communication system, and includes a long scrambling code and a short scrambling code. There are two kinds. The long scrambling code has a length of 33,554,432. The long scrambling code having a length of 33,554,432 is applied to a signal of one frame transmitted by a subscriber device using only 38400 length codes from bits 0 to 38399. It is used as a scrambling code for distinguishing and the length of the short scrambling code is 256 bits and is repeated 150 times in one frame transmitted from the subscriber device. The short scrambling code is a subscriber-specific scrambling code used when a base station is provided with a separate device such as an interference canceller.

Referring to FIG. 15A, slot 1511 is the first slot of frame 1501, and the slot number is 0. The scrambling code applied to the slot 1511 is a bit from 0 to 2559 in the case of a long scrambling code, and a short scrambling code from bits 0 to 255 is repeatedly applied 10 times in the case of the short scrambling code. Hereinafter, in order to facilitate understanding of the description of the present invention, the scrambling code is referred to as a long scrambling code and a short scrambling code. Reference numeral 1512 of FIG. 15A denotes bit 0 of the scrambling code of the first slot 1511, reference numeral 1513 denotes bit 1 of the scrambling code, and reference numeral 1514 denotes bit 2559 of the scrambling code. .

In FIG. 15A, reference numeral 1501 denotes a section of one frame as described above. The frame 1501 is composed of 15 slots from slot 1511 to slot 1519 of slot 0. The method of selecting an intermittent position of the power control group in the frame 1501 is described below.

The frame 1501 is divided into a slot group consisting of three or five slots according to DC. That is, the frame 1501 includes five slot groups consisting of three slots when the DC is 1/3 (gating slot group 0: slot 0 to slot 2, gating slot group 1: 5 in slot 3). Slot number 2, gating slot group 2: slot 6 to slot 9, gating slot group 3: slot 9 to slot 11, gating slot group 4: slot 12 to slot 14, When DC is 1/5, three slot groups of five slots (gating slot group 0: slots 0 to 4, gating slot group 1: slots 5 to 9, and gating slots Group 2: from slot 10 to slot 14). In the slot group, n bits are extracted using the following offset values among the scrambling codes of the first slot of the corresponding slot group.

In FIG. 15A, a frame is divided into three or five slot groups according to DC, and each slot group has an offset value equal to the number of each slot group. That is, when DC = 1/3, the offset values of the gating slot groups # 0 to # 4 become 0, 1, 2, 3, and 4 in order, respectively, and when DC = 1/5, the gating slot groups # 0 to ## Offset values of 2 become 0, 1, and 2, respectively, in that order. An example of the application of the offset value is as described below.

Bits 1551-1554 of FIG. 15A represent the extracted n bits. Accordingly, n bits from bits 1551 to 1554 are n bits from bit 012 of scrambling code from bit 1512 of scrambling code 2559 from bit 1514 according to a predetermined appointment between the base station and the mobile station. Is selected. N is a positive integer that can be arbitrarily selected as a multiple of 8. A method of selecting n bits from bits 1551 to 1554 in the scrambling code applied to the slot 1511 is as follows. To determine the gating slot in the current gating slot group, n bits of the scrambling code used in the previous gating slot group with an offset value are used. Here, the offset value is applied to the first bit of the scrambling code of the previous gating slot group.

(1) When DC is 1/3, the frame is divided into 5 slot groups from slot group 0 to 4. The n bits used for selecting an intermittent position for intermittently transmitting any slot in slot group 0 (offset = 4) are used by scrambling used by the mobile station applied to slot group 4 of the frame immediately preceding slot group 0. Use n sequentially from bits 30724 of the code. Here, the bit 30724 is a start bit to which an offset is applied. That is, bit 30720, which is the first start bit of the scrambling code applied to slot group 4 of the frame immediately before the slot group 0, from which the offset value of slot group 4 of the immediately preceding frame of the slot group 0 has Apply to determine the start bit of slot group 0. As a result, the start bit for selecting the scrambling code used to select the intermittent position to be applied to the slot group 0 is 30724 bits.

In this way, the n bits used to select the intermittent position for intermittent transmission of any slot in slot group 1 are applied by the offset value of slot group 0 (that is, the offset value is 0). Use n sequentially from bit 0 of the scrambling code. N bits used to select the intermittent position for intermittent transmission of slots in slot group 2 are applied to the offset value of slot group 1 (i.e., the offset value is 1) and number 7681 of the scrambling code used by the mobile station. Use n sequentially from the bit. The n bits used to select the intermittent position for intermittent transmission of slots in slot group 3 apply the offset value of slot group 2 (i.e., the offset value is 2) to number 15362 of the scrambling code used by the mobile station. Use n sequentially from the bit. N bits used to select an intermittent position for intermittent transmission of a slot within slot group # 4 apply an offset value of slot group # 3 (i.e., an offset value of 3) to use number 23043 of the scrambling code used by the mobile station. Use n sequentially from the bit. The scrambling code applied to the first slot of slot group 4, bits 30724 to n bits are applied to the offset value of slot group 4 (that is, the offset value is 4) as shown in FIG. 15A. It is used to select the intermittent position applied to the first slot group 0 of.

(2) When DC is 1/5, the frame is divided into three slot groups from slot groups 0 to 2. The n bits used for selecting the intermittent position for intermittently transmitting any slot in slot group 0 use n sequentially from 25602 bits of the scrambling code used by the mobile station. The n bits used to select an intermittent position for intermittently transmitting any slot in slot group # 1 use n bits sequentially from bits 0 of the scrambling code used by the mobile station. The n bits used to select an intermittent position for intermittently transmitting any slot in slot group 1 use n sequentially from bits 12801 of the scrambling code used by the mobile station. The n bits from the scrambling code 25602 applied to the first slot of slot group 2 are used to select an intermittent position applied to the first slot group 0 of the next frame 1502 of FIG. 15A.

FIG. 15B is a view for explaining a third method of performing random gating according to an embodiment of the present invention and implemented using CFN. FIG. 15B illustrates a method of extracting a sequence of n bits necessary for generating an intermittent transmission pattern from a fixed sequence.

Referring to FIG. 15B, an n-bit sequence to be used for determining an irregular transmission pattern in each slot group may be obtained by additionally offsetting k bits for each power control group from the fixed sequence. Thus, the n-bit sequence is repeated periodically in each frame. In FIG. 15B, a sequence obtained by applying an offset to a fixed sequence is represented. In addition, in FIG. 15B, an exemplary embodiment of k = 1. The following sequences cannot be used because the sequence to be used in each slot group is selected by applying an offset to the fixed sequence.

1.When the selected sequence is the same after applying offset

Ex) 1010101010101010101010

Offset 0: 1010101010101010101010

Offset 1: 0101010101010101010101

Offset 2: 1010101010101010101010

2. A sequence of all 1s or all 0s

E.g.) 00000000000000000000000

Example) 11111111111111111111111

One application example of the hardware structure diagram of selecting an interruption position using n bits used to select the power control interruption position of FIGS. 15A and 15B is shown in FIG. 16. FIG. 16 illustrates an embodiment of a method of selecting the power control group interruption position by using the reverse scrambling code described with reference to FIG. 15A or the fixed sequence described with reference to FIG. 15B with CFN.

Referring to FIG. 16, the memory 1601 stores n bits of the scrambling code selected according to the method described with reference to FIG. 15A or fixed n bits selected with the method described with reference to FIG. 15B. The n bits from bits 1611 to 161n stored in the memory 1601 of FIG. 16 are selected according to the method described with reference to FIG. 15A or 15B, and n is a positive number that is a multiple of eight.

The memory 1603 of FIG. 16 is a memory for storing a CFN used by the base station and the subscriber device of all the cells with which the subscriber device communicates by the length of n bits. The CFN has a length of 8 bits, and is repeated n / 8 times according to the value of n and stored in the memory 1603. A bit 1631 stored in the memory 1603 of FIG. 16 is a 0 th bit which is a MSB (Mosf Significant Bit) of the CFN. Bit 1638 is a LSB (Least Significant Bit: LSB) of the CFN. , The seventh bit. Bit 1639 stored in the memory 603 of FIG. 16 is the MSB of the CFN and has the same value as bit 1631, and bit 163n has the same value as the bit 1638 as the LSB of the CFN. In the memory 1603 of FIG. 16, the order of the MSB and LSB of the CFN may be changed.

The multiplier 1604 of FIG. 16 includes n exclusive OR operators 1641-164n. The multiplier 1604 stores the n bits of the scrambling code selected according to the method described in FIG. 15A stored in the memory 1601 of FIG. 16 or the n bits selected according to the method described in FIG. 15B. An exclusive sum operation is performed on the bits of the CFN repeatedly stored n / 8 times in the memory 1603 of FIG. 16, and the result of the operation is input to the decimal converter 1605. That is, the exclusive conformity calculator 1641-164n is composed of n and outputs the logical OR of the bits 1611-161n outputted to the memory 1601 and the bits 1631-163n outputted from the memory 1603, respectively.

The decimal converter 1605 of FIG. 16 converts the operation result of the multiplier 1604 into a decimal number. That is, the decimal converter 1605sms includes a memory 1651-165n for storing n operation values output from the exclusive fit operator 1641-64n of the multiplier, and converts the stored values into decimal numbers. The decimal number is sized according to the value of n. The decimal output from the decimal calculator 1605 of FIG. 16 is input to the modulo calculator 1607 of FIG. The modulo operator 1607 outputs different values depending on the value of DC. When the value of the DC is 1/3, the output of the modulo operator 1607 is 0,1,2. When the value of the DC is 1/5, the output of the modulo operator 1607 is 0,1,2,3,4. According to the output result of the modulo operator 1607, a slot which is not transmitted in the slot group to which the output result is applied is determined. The decimal operator 1605 and the 1607 modulo operator 1607 may be implemented in software.

Equation 1 below formulates a description of an application example of the present invention of FIGS. 15A and 16.

G: Gating Slot Group Number

G _prev : previous gating slot group number

C ⁱ : CFN number of I frame

T: Inverse of gating rate

S: scrambling code

15A and 16 are applied to the case where the current power control slot group is 1, n = 16, CFN = 10001100 (binary), and DC = 1/3 to help understand the equation (1). Description of the present invention is as follows.

If the value of the 16 bits of the scrambling code selected by the method described in FIG. 15A is 1101001010111000, the value of the 16 bits of the scrambling code is stored in the memory 1601 of FIG. 16. Since CFN = 10001100, the value stored in the memory 1603 of FIG. 16 becomes 1000110010001100. The multiplier 1604 of FIG. 16 includes 16 exclusive fit operators, and the result calculated by these exclusive fit operators is 0101111000110100. The calculation result of the decimal operator 1605 of FIG. 16, which takes the output of the multiplier 1604, becomes '11, 386 '(or '24, 116'). The output '11, 386 '(or '24, 116') of the decimal operator is shown in FIG. Considering that the modulo operator 1607 of 16 is DC = 1/3, the calculation result of the modular operator 1607 is 1 (or 2 when '24, 116 '). Accordingly, among the three slots in slot group 2, the slots to which the control data of the dedicated control channel, TFCI, TPC, and pilot symbol, should be transmitted, become the second (or third) slot.

Equation 2 below formulates a description of an application example of the present invention of FIGS. 15B and 16. Here, if CFN of the current frame is C _i and the current power control slot group number is S _G , the slot number S (i, j) transmitted from the current power control slot group of the current frame is represented by Equation 2 below. Is obtained by.

j: the number of gating slot groups in the I frame

A _j : Sequence related to j-th gating slot group, sequence obtained by applying j bit offset

C _i : sequence obtained by repeating the I th CFN

S _G : Number of slots that constitute one gating slot group

N _G : Number of gating slot groups constituting one frame

Detailed description of Equation 2 is as follows.

S (i, j) represents the number of slots to be transmitted among slots constituting the i-th frame and the j-th power control slot group. In this case, the slot number is not a slot number attached to one frame but a slot number in each slot group. A _j represents a sequence obtained by applying an offset corresponding to each slot group from the fixed sequence as shown in FIG. 15B. C _i is an n-bit sequence created by repeating CFN (8 bits). S _G represents the number of slots constituting one slot group. Therefore, the number of slots constituting the slot group is 3 when the DC value is 1/3, and 5 when the DC value is 1/5. do. N _G represents the number of power control slot groups constituting one frame. The value of N _G is 5 when the DC value is 1/3, and 3 when the DC value is 1/5. If j = 0, that is, in the first slot group of the frame, A _j and C _i are performed exclusively, and then 1 is added to the value taken modulo by S _G -1. As a result of this operation, the first slot of each frame always stops transmitting. In addition, when j = N _G −1, that is, only the last slot (S _G −1) is always transmitted in the last slot group of the frame. For other slot groups (0 <j <N _G -1), after performing exclusive fit operation on A _j and C _i , take modulo with S _G. This first and last slot group is treated differently from the rest of the group to aid in channel estimation. Without such a constraint, the transmission position may be determined using the same rule for all slot groups, that is, Equation 3 below.

The operation of determining the intermittent positions for the slots in the slot group as shown in Equations 2 and 3 will be described with reference to FIGS. 16 and 10A to 10B.

The configuration as shown in FIG. 16 corresponds to the intermittent position selector 150 of FIG. 10A and the intermittent position selector 250 of FIG. 10B. The operation of the intermittent position selector will be described with reference to FIG. 16.

The memory 1601 stores n fixed bits selected according to the method described in FIG. 15B, where n is a positive number that is a multiple of eight. The sequence stored in the memory 1601 is a sequence A _j obtained by applying a bit offset in a fixed sequence, and the memory 1601 is a second memory that generates the sequence A _j . In addition, the memory 1603 is a memory for storing the CFN used by the base station and the subscriber device of all the cells with which the subscriber device communicates by the length of n bits. The sequence stored in the memory 1603 is a sequence C _i obtained by repeating CFN, and the memory 1603 is a first memory for generating the sequence C _i . The multiplier 1604 includes n exclusive sum operators, and performs an exclusive sum operation on a bit basis of the sequence A _j and the sequence C _i stored in the memory 1601. Results in the input of the operation to the decimal converter 1605. The decimal converter 1605 converts the operation result of the multiplier 1604 into a decimal number and inputs it to a modulo operator 1607. The modulo operator 1607 has a different output value depending on the number of slots S _G constituting one slot group. That is, when the number S _G of the slots constituting the one slot group is 3, the output of the modulo operator 1607 is 0,1,2, and when the number of slots S _G is 5, the output of the modulo operator 1607 is 0,1,2, 3,4. In addition, the modulo operator 1607 may perform another modulo operation as shown in Equation 2 according to the number of slot groups located in one frame. That is, if the current slot group has the first slot group number in the frame, the intermittent position is determined so that the first slot data in the slot group is not transmitted. If the current slot group number has the last slot group number, the intermittent position is determined to transmit the last slot data in the slot group. Decide

The intermittent position slot information in the slot group determined as described above is applied to the intermittent transmission controller 141 of FIG. 10A or the intermittent transmission controller 241 of FIG. 10B. Then, the intermittent transmission controller transmits data of the dedicated control channel in the slot section of the intermittent position determined by the intermittent position selector, and stops transmitting the dedicated control channel data in the remaining slot sections of the slot group. off).

In the mobile communication system as described above, there may exist the following cases for the state transition method for intermittent transmission between the base station and the mobile station, and the transition method is determined according to the system setting. One method is to transition by a set timer value or a transition indication message at the base station. Another method is to transition while changing the intermittent rate as a case of transition sequentially. In this case, the selection of the interruption rate DC value may be determined in consideration of the capacity of the mobile station and the quality of the channel environment. In the state transition method described above, assuming that one frame includes 16 slots, the former transition method is DC = 1/1 to DC = 1/2, and DC = 1/1 to DC = 1 /. By 4, we will transition from DC = 1/1 to DC = 1/8 at once. The latter transition method is a transition from DC = 1/1 to DC = 1/2, from DC = 1/2 to DC = 1/4 and from DC = 1/4 to DC = 1/8. An intermittent transmission method according to an embodiment of the present invention described below will be described while using a case where a frame is composed of 16 slots and 15 slots. In this case, the intermittent rate may be 1/2, 1/4, 1/8, etc. when the first frame is composed of 16 slots, and the intermittent rate when one frame consists of 15 slots is 1/3 and 1 / 5 and so on.

7A and 7B illustrate reverse DPCCHs when a dedicated medium access control (MAC) logical channel is generated when data to be transmitted for a certain period of time is not generated in FIGS. 6A and 6B and a message to be transmitted is transmitted to a reverse DPDCH, which is a physical channel. It is.

Reference numeral 311 of FIG. 7A illustrates a case where a reverse DPDCH message occurs while the reverse DPCCH is not intermittently transmitted (that is, DC = 1/1 during continuous transmission). Reference numeral 312 shows a case in which a reverse DPDCH message occurs during DC = 1/2 intermittent transmission of the reverse DPCCH. Reference numeral 313 illustrates a case in which a reverse DPDCH message occurs during DC = 1/4 intermittent transmission of the reverse DPCCH. Reference numeral 314 illustrates a case in which a reverse DPDCH message occurs during DC = 1/8 intermittent transmission of the reverse DPCCH. As in reference numerals 312, 313, and 314, even if the slot does not transmit in the intermittent transmission pattern, when the reverse DPDCH is transmitted within the interval, the slot of the interval is normally transmitted. In the normal transmission slot, the TPC bit for forward power control may be omitted and the pilot section may be extended to have a slot length. After transmitting the reverse DPDCH message through normal transmission of the slot, the reverse DPCCH may be transmitted from the consecutive slots without interruption, and the transmission may be continued by intercepting at the original gating rate until receiving the message to stop the gating from the base station. have. That is, when a reverse DPDCH message is transmitted during intermittent transmission at DC = 1/2, the slot is normally transmitted in the interval and the intermittent transmission at DC = 1/2 is received before receiving a message to stop gating from the base station. Then, when transmitting user data, intermittent transmission may be stopped with DC = 1.

Similar to the reverse DPCCH, in the forward link, if a forward DPDCH message occurs during intermittent transmission on the DPCCH, the slot of the interval is normally transmitted within the interval, even if the slot is not transmitted in the intermittent transmission pattern. In the normal transmission slot, the TPC bit for reverse power control may be omitted and the pilot section may be extended to have a slot length. After transmitting the forward DPDCH message through normal transmission of a slot, the forward slot may transmit the forward DPCCH without interruption and continue to transmit by intercepting at the original gating rate until receiving a request message to stop gating from the mobile station. It may be. In other words, when a forward DPDCH message is transmitted during intermittent transmission at DC = 1/2, a normal transmission of a slot of the interval is performed, and a message requesting to stop gating from the mobile station while intermittently transmitting at DC = 1/2 again. When transmitting user data after reception, intermittent transmission may be stopped by DC = 1.

Reference numeral 315 of FIG. 7B illustrates a case in which a reverse DPDCH message occurs during DC = 1/2 intermittent transmission of the reverse DPCCH. Reference numeral 316 illustrates a case in which a reverse DPDCH message occurs during DC = 1/4 intermittent transmission of the reverse DPCCH. Reference numeral 317 shows a case in which a reverse DPDCH message occurs during the DC = 1/8 intermittent transmission of the reverse DPCCH. As in reference numerals 315, 316, and 317, even if the slot does not transmit in the intermittent transmission pattern, when the reverse DPDCH is transmitted within the interval, the slot of the interval is normally transmitted. In the normal transmission slot, the TPC bit for forward power control may be omitted and the pilot section may be extended to have a slot length. After transmitting the reverse DPDCH message through normal transmission of the slot, the reverse DPCCH may be transmitted from the consecutive slots without interruption, and the transmission may be continued by intercepting at the original gating rate until receiving the message to stop the gating from the base station. have. That is, during intermittent transmission at DC = 1/2, normal transmission of a slot of the interval while a reverse DPDCH message is transmitted, and a message for interrupting gating from the base station after intermittent transmission at DC = 1/2 is received. Then, intermittent transmission may be interrupted when transmitting user data.

The reverse DPCCH and the forward DPCCH may be simultaneously interrupted and transmitted in the same pattern. During the intermittent transmission of the forward DPCCH, a message to be transmitted to the forward DPDCH may occur, and the slot may be normally transmitted and the forward DPCCH may be transmitted without interruption from the consecutive slots after the forward DPDCH message is transmitted. The transmission may continue by intercepting at the original gating rate until a message is made available. In other words, during intermittent transmission at DC = 1/2, a normal DP slot is transmitted while a forward DPDCH message is transmitted, and a message for interrupting gating from the mobile station while intermittently transmitting at DC = 1/2 is transmitted. Intermittent transmission may be interrupted with DC = 1 when transmitting user data data after reception.

8A is a diagram illustrating signal transmission of the forward and reverse links according to the suspension of transmission of the forward DPDCH. In the user data active part in which the reverse DPDCH has no data to transmit, the base station and the mobile station start gating when receiving a message that can start gating exceeding a set timer value as shown in 801. In the embodiment of FIG. 8A, a message for starting gating is generated at the base station, and when there is no forward and reverse DPDCH, the mobile station may send the message to the base station. In the forward DPCCH transmission of FIG. 8A, all TFCI, TPC, and pilot symbols may be transmitted without interruption. Since the TPC bit has a meaningless TPC value determined by measuring the power strength of the pilot symbol position of the intermitted slot in the reverse DPCCH, the mobile station transmits the TPC transmitted by the base station for the reverse power control in consideration of the interruption pattern of the reverse DPCCH. The meaningless TPC value of the bit is ignored and transmitted at the same intensity as the transmit power transmitted in the previous slot. In addition, in the transmission of the forward DPCCH of FIG. 8A, only TFCI and TPC in the forward DPCCH may be interrupted, and pilot symbols in the forward DPCCH may not be interrupted. The interruption pattern at this time is the same as the interruption pattern of the reverse DPCCH of the mobile station. The slot that intercepts the TPC in the forward DPCCH refers to a TPC generated by measuring a pilot symbol corresponding to the intermitted slot in the DPCCH transmitted by the mobile station.

Reference numeral 802 illustrates a message generated at the base station and transmitted to the mobile station through the forward DPDCH. In this case, the mobile station which intermittently transmits the reverse DPCCH may stop the intermittent transmission and continue the transmission at DC = 1 after receiving the message. In addition, the mobile station performing the intermittent transmission of the reverse DPCCH may continue the intermittent transmission even after receiving the message, and then receive a message that stops the gating, stops the intermittent transmission at a designated time point, and transmits DC = 1.

8B is a diagram illustrating signal transmission of the forward and reverse links according to the suspension of transmission of the reverse DPDCH. In the user data active part state without the forward DPDCH, as shown by reference numeral 803, when the transmission of the reverse DPDCH is stopped, the base station and the mobile station transition to a state exceeding the set timer value or exchanging state transition messages. In the embodiment of FIG. 8B, the state transition message is generated through the forward DPDCH, but the state transition message may also occur in the reverse DPDCH of the mobile station. In the forward DPCCH transmission of FIG. 8B, all TFCI, TPC, and pilot symbols can be transmitted without interruption. Since the TPC bit has a meaningless TPC value determined by measuring the power strength of the pilot symbol position of the intermitted slot in the reverse DPCCH, the mobile station transmits the TPC transmitted by the base station for the reverse power control in consideration of the interruption pattern of the reverse DPCCH. The meaningless TPC value of the bit is ignored and transmitted at the same intensity as the transmit power transmitted in the previous slot. In addition, in the transmission of the forward DPCCH of FIG. 8B, only TFCI and TPC may be controlled, and pilot symbols in the forward DPCCH may not be controlled. The interruption pattern at this time is the same as the interruption pattern of the reverse DPCCH of the mobile station. The slot that intercepts the TPC in the forward DPCCH refers to a TPC generated by measuring a pilot symbol corresponding to the intermitted slot in the DPCCH transmitted by the mobile station.

Reference numeral 804 illustrates that a message for state transition is generated at the base station and transmitted to the mobile station through the forward DPDCH. In this case, the mobile station intermittently transmitting the reverse DPCCH may stop the intermittent transmission and continue the transmission at DC = 1 after receiving the state transition message. In addition, the mobile station which intermittently transmits the reverse DPCCH may continue the intermittent transmission even after receiving the state transition message, and then stop the intermittent transmission and transmit DC = 1 when the state transition occurs.

8C is a diagram illustrating signal transmission of the forward and reverse links according to transmission stop of the forward DPDCH. In the user data active part state without the reverse DPDCH, as shown by reference numeral 805, when the transmission of the forward DPDCH is stopped, the base station and the mobile station may transition to the control maintenance state when the forward DPDCH message is exceeded or a forward DPDCH message occurs for state transition. Will be done. In the embodiment of FIG. 8C, a message for a state transition to a control maintenance sub-state is generated at the base station. When there is no forward and reverse DPDCH, the mobile station may send a message requesting a state transition to the base station. In the transmission of the forward DPCCH of FIG. 8C, all TFCI, TPC, and pilot symbols may be transmitted without interruption. Since the TPC bit has a meaningless TPC value determined by measuring the power strength of the pilot symbol position of the intermitted slot in the reverse DPCCH, the mobile station transmits the TPC transmitted by the base station for the reverse power control in consideration of the interruption pattern of the reverse DPCCH. The meaningless TPC value of the bit is ignored and transmitted at the same intensity as the transmit power transmitted in the previous slot. In addition, in the transmission of the forward DPCCH of FIG. 8C, only TFCI and TPC in the forward DPCCH may be interrupted, and pilot symbols in the forward DPCCH may not be interrupted. The interruption pattern at this time is the same as the interruption pattern of the reverse DPCCH of the mobile station. The slot that intercepts the TPC in the forward DPCCH refers to a TPC generated by measuring a pilot symbol corresponding to the intermitted slot in the DPCCH transmitted by the mobile station.

Reference numeral 806 illustrates that a message for state transition is generated in the mobile station and transmitted to the base station through the reverse DPDCH. In this case, the mobile station which intermittently transmits the reverse DPCCH may stop the intermittent transmission and continue the transmission at DC = 1 after transmitting the state transition message through the reverse DPDCH. In addition, the mobile station which performs the intermittent transmission of the reverse DPCCH may continue the intermittent transmission even after the state transition message is transmitted, and then stop the intermittent transmission and transmit DC = 1 when the state transition occurs.

8D is a diagram illustrating signal transmission of the forward and reverse links according to the suspension of transmission of the reverse DPDCH. In the user data activator without a forward DPDCH, as shown by reference numeral 807, when the transmission of the reverse DPDCH is stopped, the base station and the mobile station transition to a state exceeding a set timer value or exchanging state transition messages. In the embodiment of FIG. 8D, the message for the state transition occurs through the forward DPDCH, but the state transition message may also occur in the reverse DPDCH of the mobile station. In the transmission of the forward DPCCH of FIG. 8D, all TFCI, TPC, and pilot symbols can be transmitted without interruption. Since the TPC bit has a meaningless TPC value determined by measuring the power strength of the pilot symbol position of the intermitted slot in the reverse DPCCH, the mobile station transmits the TPC transmitted by the base station for the reverse power control in consideration of the interruption pattern of the reverse DPCCH. The meaningless TPC value of the bit is ignored and transmitted at the same intensity as the transmit power transmitted in the previous slot. In addition, in the transmission of the forward DPCCH of FIG. 8D, only TFCI and TPC may be controlled, and pilot symbols in the forward DPCCH may not be controlled. The interruption pattern at this time is the same as the interruption pattern of the reverse DPCCH of the mobile station. The slot that intercepts the TPC in the forward DPCCH refers to a TPC generated by measuring a pilot symbol corresponding to the intermitted slot in the DPCCH transmitted by the mobile station.

Reference numeral 808 illustrates that a message for state transition is generated in the mobile station and transmitted to the base station through the reverse DPDCH. In this case, the mobile station which intermittently transmits the reverse DPCCH may stop the intermittent transmission and continue the transmission at DC = 1 after transmitting the state transition message through the reverse DPDCH. In addition, the mobile station which performs the intermittent transmission of the reverse DPCCH may continue the intermittent transmission even after the state transition message is transmitted, and then stop the intermittent transmission and transmit DC = 1 when the state transition occurs.

9A is a diagram illustrating signal transmission of the forward and reverse links according to transmission stop of the forward DPDCH. By stopping transmission of the forward DPDCH, the base station and the mobile station make a state transition at a time point exceeding a set timer value or exchanging state transition messages with each other. FIG. 9A illustrates a case in which the forward DPCCH is regulated in the same manner as the interruption pattern of the reverse DPCCH. In the embodiment of FIG. 9A, the state transition message is generated through the forward DPDCH, but the state transition message may also occur through the reverse DPDCH of the mobile station.

FIG. 9B is a diagram illustrating signal transmission of the forward and reverse links according to the transmission stop of the reverse DPDCH. FIG. By stopping transmission of the reverse DPDCH, the base station and the mobile station make a state transition at a time point exceeding the set timer value or exchanging state transition messages with each other. 9B illustrates a case where the forward DPCCH is regulated in the same manner as the interruption pattern of the reverse DPCCH. In the embodiment of FIG. 9B, the state transition message is generated through the forward DPDCH. However, the state transition message may also occur through the reverse DPDCH of the mobile station.

In the above drawings and descriptions, the forward and reverse frame start time points are the same. However, in the actual UTRA system, the reverse frame start time is artificially delayed by 250 microseconds from the forward frame start time. This is to allow the power control time delay to be one slot (1 slot = 0.625ms) in consideration of the propagation delay of the transmission signal when the cell radius is within about 30 km. Therefore, considering the artificial time delay between the forward and reverse frame start time, the DPCCH signal transmission diagram according to the intermittent transmission of the present invention can be represented as shown in Figures 11a, 11b, 11c, 11d, and 11e. The configurations of the base station transmitter and mobile station transmitter that enable such intermittent transmission are shown in Figs. 10A and 10B.

10A is a block diagram of a base station transmitter according to another embodiment of the present invention. The difference from the configuration of the base station transmitter according to an embodiment of the present invention illustrated in FIG. 5A is that the pilot, TPC, and TFCI bits constituting the forward DPCCH are different patterns by the Gated Transmission Controller 141, respectively. It can be transmitted intermittently. That is, the Gated Transmission Controller 141 intermittently transmits the Pilot, TPC and TFCI bits in the forward DPCCH in the slot (or timeslot) promised to the mobile station in the forward DPCCH in the control maintaining sub-state where no traffic data is transmitted to the forward and reverse DPDCH. By using the intermittent transmission controller 141, the pilot of the n-1th slot and the nth TPC and TFCI bits may be configured in an intermittent transmission unit. If the base station performs the intermittent transmission in the control maintaining sub-state using the intermittent transmission controller 141, the intermittent transmission for pilot and TFCI may not be performed in the frame section in which the signaling data is transmitted when the signaling data is transmitted.

In addition, the intermittent transmission controller 141 transmits one slot (or all one slot) including the pilot symbol, the TPC, and the TFCI bits of the forward DPCCH to the mobile station in a control maintaining sub-state in which traffic data is not transmitted on the forward and reverse DPDCHs. (Or timeslot) may be intermittently transmitted.

The forward intermittent transmission pattern is the same pattern as the reverse intermittent transmission pattern, but an offset may exist between the two for efficient power control. The above offset is given as a system parameter.

In addition, the intermittent transmission controller 141 may randomly or regularly select the positions of the symbols to be interrupted according to the output of the intermittent position selector 250. That is, the intermittent position selector 250 may determine the positions of slots that are regularly regulated. (For example, in the case of 1/3 interruption, the third slot, the 6th, and 9th --- transmits.) The interruption positioner 250 may be configured as shown in FIGS. 15A, 15B, and 16. And it is possible to randomly select the position of the slot to be interrupted by the method. In this case, the slot position to be intermittently transmitted is determined by a random pattern.

10B illustrates a configuration of a mobile station transmitting apparatus according to another embodiment of the present invention. The configuration difference from the mobile station transmitter according to an embodiment of the present invention shown in FIG. 5B is that the pilot, TFCI, FBI, and TPC bits constituting the reverse DPCCH are intermittently transmitted in different patterns by the intermittent transmission controller 241. Can be. Gated Transmission Controller 241 intercepts pilot, TFCI, FBI, and TPC bits in the reverse DPCCH in the slot (or timeslot) promised to the mobile station in the reverse DPCCH in the control-sustained state where no traffic data is transmitted to the forward and reverse DPDCHs. Send by. If the base station performs the intermittent transmission in the control holding sub-state using the intermittent transmission controller 241, the intermittent transmission for pilot and TFCI may not be performed in a frame section in which signaling data is transmitted when transmitting signaling data.

In addition, the intermittent transmission controller 241 may assign one slot (or all one slot) including the pilot symbols, TFCI, FBI, and TPC bits of the reverse DPCCH to the mobile station in a control maintaining sub-state in which traffic data is not transmitted on the forward and reverse DPDCHs. Intermittent transmissions may be made in slots (or timeslots).

The forward intermittent transmission pattern is the same pattern as the reverse intermittent transmission pattern, but an offset may exist between the two for efficient power control. The above offset is given as a system parameter.

In addition, the intermittent transmission controller 141 may randomly or regularly select the positions of the symbols to be interrupted according to the output of the intermittent position selector 250. That is, the intermittent position selector 250 may determine the positions of slots that are regularly regulated. (For example, in the case of 1/3 interruption, the third slot, the 6th, and 9th --- transmits.) The interruption positioner 250 may be configured as shown in FIGS. 15A, 15B, and 16. And it is possible to randomly select the position of the slot to be interrupted by the method. In this case, the slot position to be intermittently transmitted is determined by a random pattern.

11A to 11D and FIGS. 12A to 12D are signal transmission diagrams when intermittent transmission is performed by the base station and the mobile station transmitter as shown in FIGS. 10A and 10B. 11A to 11D show that an intermittent transmission is performed when a frame length is 10 msec and 16 slots (Power Control Group) exist in one frame, that is, when one slot is 0.625 msec in length. 12A to 12D show that the intermittent transmission is performed when the frame length is 10 msec and 15 slots (Power Control Group) exist in one frame, that is, when the slot length is 0.667 msec.

11A is a signal transmission diagram according to a first embodiment of intermittent transmission of forward and reverse DPCCH of the present invention. As shown in FIG. 11A, the intermittent transmission unit of the forward DPCCH may not be a slot unit. That is, the pilot symbols of the nth slot, the TFCI and the TPC of the n + 1th slot in two adjacent slots are set as intermittent transmission units of the forward DPCCH. For example, when the gating rate is 1/2, the pilot symbol of slot number 0, TFCI and slot TPC of slot number 1 are set as intermittent transmission units of downlink DPCCH. When the gating rate is 1/4, the pilot symbol of slot number 2, TFCI and TPC of slot number 3 are set as intermittent transmission units of downlink DPCCH. When the gating rate is 1/8, the pilot symbol of slot number 6, TFCI and TPC of slot number 7 are set in the intermittent transmission unit of the downlink DPCCH. This is because the n-th pilot symbol may be required to demodulate the n + 1 th TPC according to the demodulation method of the TPC signal at the receiver, so that the unit of the forward DPCCH intermittent transmission is different from the actual slot unit.

If a signaling message occurs during intermittent transmission as described above, it is transmitted through forward or reverse DPDCH. Therefore, the performance at the beginning of the frame is very important. In the present invention, as shown in FIG. 10A, the TPC of the forward DPCCH and the TPC of the reverse DPCCH are positioned in slot number 15 (16th slot, the last slot of one frame), so that the first of the n + 1th frames is located. The slot can be power controlled using the TPC present in the nth last slot. That is, the TPC is placed in the last slot of one frame to control power of the first slot of the next frame.

On the other hand, in the above-described UTRA system, the offset of the start of the forward and reverse frames is fixed to 250 microseconds. However, in the forward and reverse DPCCH intermittent transmission, the offset value may be changed to an arbitrary value in the process of parameter exchange for the DPCCH intermittent transmission by the base station and the terminal during call setup. The offset value is set to an appropriate value in consideration of the transmission delay between the base station and the terminal during the call setup process. That is, when the cell radius is 30km or more, the DPCCH intermittent transmission may have a value larger than the conventional 250 microseconds, and the value may be an experimental value.

11B is a signal transmission diagram according to a second embodiment of intermittent transmission of forward and reverse DPCCH of the present invention. For each case where the gating rate is 1/2, 1/4, or 1/8, the transmission of the downlink DPCCH precedes the transmission of the uplink DPCCH when the intermittent transmission is started. This difference is indicated by 'DL-UL timing' in each case where the gating rates are 1/2, 1/4, or 1/8.

Referring to FIG. 11B, the pilot symbols of the nth slot, the TFCI of the n + 1th slot, and the TPC are set as intermittent transmission units of the forward DPCCH in two adjacent slots. For example, when the gating rate is 1/2, the pilot symbol of slot number 0, TFCI and slot TPC of slot number 1 are set as intermittent transmission units of downlink DPCCH. When the gating rate is 1/4, the pilot symbol of slot number 2, TFCI and TPC of slot number 3 are set as intermittent transmission units of downlink DPCCH. When the gating rate is 1/8, the pilot symbol of slot number 6, TFCI and TPC of slot number 7 are set in the intermittent transmission unit of the downlink DPCCH.

In addition, it can be seen that the TPC for power control of the first slot of the next frame is located in the last slot of one frame. That is, the TPC of the downlink DPCCH and the TPC of the uplink DPCCH are simultaneously located in the slot number 15 (16th slot).

11C is a signal transmission diagram according to a third embodiment of intermittent transmission of forward and reverse DPCCH of the present invention. In the case where the gating rates are 1/2, 1/4, and 1/8, the transmission of the uplink DPCCH is preceded by the transmission of the downlink DPCCH when the intermittent transmission is started.

Referring to FIG. 11C, the pilot symbols of the nth slot, the TFCI and the TPC of the n + 1th slot are set as intermittent transmission units of the forward DPCCH in two adjacent slots. For example, when the gating rate is 1/2, the pilot symbol of slot number 1, TFCI and slot TPC of slot number 2 are set as intermittent transmission units of downlink DPCCH. When the gating rate is 1/4, the pilot symbol of slot number 2, TFCI of slot number 3, and TPC are set as intermittent transmission units of downlink DPCCH. When the gating rate is 1/8, the pilot symbol of slot number 6, the TFCI and slot TPC of slot number 7 are set in the intermittent transmission unit of the downlink DPCCH.

In addition, it can be seen that the TPC for power control of the first slot of the next frame is located in the last slot of one frame. That is, the TPC of the downlink DPCCH and the TPC of the uplink DPCCH are simultaneously located in the slot number 15 (16th slot).

11D is a signal transmission diagram according to a fourth embodiment of intermittent transmission of forward and reverse DPCCH of the present invention. For each case where the gating rate is 1/2, 1/4, or 1/8, when the intermittent transmission starts, the transmission of the downlink DPCCH precedes the transmission of the uplink DPCCH, and the forward and reverse intermittent transmission patterns are the same. The case where the interval is set is shown.

Referring to FIG. 11D, pilot symbols of the nth slot, TFCI, and TPC of the n + 1th slot are set as intermittent transmission units of the forward DPCCH in two adjacent slots. For example, when the gating rate is 1/2, the pilot symbol of slot number 0, TFCI and slot TPC of slot number 1 are set as intermittent transmission units of downlink DPCCH. When the gating rate is 1/4, the pilot symbol of slot number 0, TFCI of slot number 1, and TPC are set as intermittent transmission units of downlink DPCCH. When the gating rate is 1/8, the pilot symbol of slot number 2, TFCI of slot number 3, and TPC are set in an intermittent transmission unit of downlink DPCCH.

In addition, it can be seen that the TPC for power control of the first slot of the next frame is located in the last slot of one frame. That is, the TPC of the downlink DPCCH and the TPC of the uplink DPCCH are simultaneously located in the slot number 15 (16th slot).

12A is a signal transmission diagram according to a sixth embodiment of intermittent transmission of forward and reverse DPCCH of the present invention. 12A illustrates a case in which a gating rate for intermittent transmission of forward and reverse DPCCH is 1/3, that is, intermittent transmission occurs in a portion corresponding to 1/3 of the slots. Intermittent transmission occurs in five slots of the total 15 slots. At this time, the intermittent transmission unit of the forward DPCCH is set not to be a slot unit. That is, the pilot symbols of the nth slot, the TPC and the TFCI of the n + 1th slot are set as intermittent transmission units of the forward DPCCH in two adjacent slots. Therefore, in the order of transmission, the pilot symbols of the Nth slot are transmitted, and then the TPC symbols and the TFCI symbols of the n + 1th slot are attached.

<Case 1> of FIG. 12A illustrates a case in which uplink DPCCH transmission is performed in the same manner as downlink DPCCH transmission when the intermittent transmission starts, and the forward term and the reverse intermittent transmission pattern are set at the same interval. It is. In this case, two adjacent slots, the pilot symbol of slot number 1, the TPC and TFCI of slot number 2 are set as intermittent transmission units of downlink DPCCH, and the pilot symbol of slot number 4 and TPC and TFCI of slot number 5 are forward (Downlink) DPCCH intermittent transmission unit, slot number 7 pilot symbol, slot number 8 TPC, TFCI is set to downlink DPCCH intermittent transmission unit, slot number 10 pilot symbol and slot number 11 TPC and TFCI are set as intermittent transmission units of downlink DPCCH, and pilot symbols of slot number 13 and TPC and TFCI of slot number 14 are set as intermittent transmission units of downlink DPCCH.

<case 2> shows a case in which transmission of an uplink DPCCH precedes transmission of a downlink DPCCH when intermittent transmission is started. In this case, two adjacent slots, the pilot symbol of slot number 0, the TPC and TFCI of slot number 1 are set as intermittent transmission units of downlink DPCCH, and the pilot symbol of slot number 3 and TPC and TFCI of slot number 4 are forward (Downlink) DPCCH intermittent transmission unit, slot number 6 pilot symbol, slot number 7 TPC, TFCI is set to downlink DPCCH intermittent transmission unit, slot number 9 pilot symbol and slot number 10 TPC and TFCI are set as intermittent transmission units of downlink DPCCH, and pilot symbols of slot number 12 and TPC and TFCI of slot number 13 are set as intermittent transmission units of downlink DPCCH.

<case 3> shows a case in which transmission of an uplink DPCCH precedes transmission of a downlink DPCCH when intermittent transmission is started. In this case, two adjacent slots, the pilot symbol of slot number 1, the TPC and TFCI of slot number 2 are set as intermittent transmission units of downlink DPCCH, and the pilot symbol of slot number 4 and TFCI and TPC of slot number 5 are forward (Downlink) DPCCH intermittent transmission unit, slot number 7 pilot symbol, slot number 8 TPC, TFCI is set to downlink DPCCH intermittent transmission unit, slot number 10 pilot symbol and slot number 11 TPC and TFCI are set as intermittent transmission units of downlink DPCCH, and pilot symbols of slot number 13 and TPC and TFCI of slot number 14 are set as intermittent transmission units of downlink DPCCH.

<case 4> shows a case in which transmission of an uplink DPCCH lags behind transmission of a downlink DPCCH when intermittent transmission is started. In this case, two adjacent slots, the pilot symbol of the previous slot number 14 and the TPC and TFCI of the slot number 0 are set as intermittent transmission units of the downlink DPCCH, and the pilot symbol of the slot number 2 and the TPC and TFCI of the slot number 3 are Downlink DPCCH is set in intermittent transmission unit, slot number 5 pilot symbol, slot number 6 TPC and TFCI are set in downlink DPCCH intermittent transmission unit, slot number 8 pilot symbol and slot number TPC and TFCI of 9 are set as intermittent transmission units of downlink DPCCH, and pilot symbols of slot number 11 and TPC and TFCI of slot number 12 are set as intermittent transmission units of downlink DPCCH.

<case 5> shows a case in which transmission of an uplink DPCCH lags behind transmission of a downlink DPCCH when intermittent transmission is started. In this case, two adjacent slots, the pilot symbol of slot number 0, the TPC and TFCI of slot number 1 are set as intermittent transmission units of downlink DPCCH, and the pilot symbol of slot number 3 and TFCI and TPC of slot number 4 are forward (Downlink) DPCCH intermittent transmission unit, slot number 6 pilot symbol, slot number 7 TPC, TFCI is set to downlink DPCCH intermittent transmission unit, slot number 9 pilot symbol and slot number 10 TPC and TFCI are set as intermittent transmission units of downlink DPCCH, and pilot symbols of slot number 12 and TPC and TFCI of slot number 13 are set as intermittent transmission units of downlink DPCCH.

12B is a signal transmission diagram according to a seventh embodiment for intermittent transmission of forward and reverse DPCCH of the present invention. 12B illustrates a case in which a gating rate for intermittent transmission of forward and reverse DPCCH is 1/5, that is, intermittent transmission occurs in a portion corresponding to 1/5 slots among all slots. The transmission occurs in the portion corresponding to three slots among the total 15 slots. At this time, the intermittent transmission unit of the forward DPCCH is set not to be a slot unit. That is, the pilot symbols of the nth slot, the TFCI and the TPC of the n + 1th slot in two adjacent slots are set as intermittent transmission units of the forward DPCCH. Accordingly, one pilot symbol, a TPC symbol, and a TFCI symbol are transmitted based on five slots, and the transmission order of the symbols transmits the pilot symbol of the n th slot and then the TPC symbol and the TFCI symbol of the n + 1 th slot. . At this time, the TPC symbol and the TFCI symbol are continuously transmitted.

Referring to FIG. 12B, two adjacent slots, a pilot symbol of slot number 3, a TPC and a TFCI of slot number 4 are set as intermittent transmission units of downlink DPCCH, and a pilot symbol of slot number 8 and slot number 9 TPC and TFCI are set as intermittent transmission units of downlink DPCCH, and pilot symbols of slot number 13 and TPC and TFCI of slot number 14 are set as intermittent transmission units of downlink DPCCH.

12C is a signal transmission diagram according to an eighth embodiment of intermittent transmission of forward and reverse DPCCH of the present invention.

Referring to FIG. 12C, the intermittent transmission pattern is set not to intermittently transmit the last slot of the reverse DPCCH in the control holding substate. This intermittent transmission pattern has excellent channel estimation performance because the pilot symbols of the last slot of the frame can be used when performing channel estimation at the base station. It may also increase the time it takes for the base station to process the FBI bits transmitted by the mobile station.

12D is a signal transmission diagram according to the ninth embodiment of the intermittent transmission of the forward and reverse DPCCHs of the present invention, and shows an intermittent transmission pattern according to the forward message transmission while performing the intermittent transmission in the control maintaining substate.

Referring to FIG. 12D, during the frame period (DPDCH transmission) in which the forward message is transmitted, the pilot and the TFCI may stop the intermittent transmission, and the TPC may continuously perform the intermittent transmission according to the intermittent pattern.

As shown in FIG. 12D, the present invention may stop intermittent pilot and TFCI intermittent transmission and continuously transmit FBI and TPC according to an intermittent pattern during a frame period (DPDCH transmission) in which a reverse message is transmitted. .

As described above, when the mobile communication system performs the intermittent transmission function, it should be possible to control the transmission power of the data of the dedicated control channel transmitted even in the intermittent transmission state. In the following description, an operation of generating and transmitting a power control bit by measuring a signal received from a counterpart when a mobile station and a base station starts intermittent transmission, and looks at an operation of controlling a transmission power of data using the received power control bit. .

Intermittent transmission of the dedicated control channel data starts and ends at the time indicated by the upper layer. In the intermittent transmission mode, the base station and the mobile station change their operation depending on whether or not the DPDCH exists in the DPCH to be transmitted. When the DPCH does not include the DPDCH, the intermittent transmission controller on the transmitting side controls the data of the dedicated control channel to transmit only the data of the slot selected in the corresponding slot group and the data of the other slots are not transmitted. Control not to In this case, the method for determining the position of the slot to be controlled in the slot group unit may be performed according to a predetermined gating pattern as described above, and also an irregular pattern using SFN or CFN as described above. You can determine the interruption position of the slot. However, when the DPCH includes the DPDCH, the transmitter transmits in all timeslots. However, the receiving side recognizes only the slots of the selected intermittent position among all slots of the received frame as valid slots from the viewpoint of power control. Such intermittent transmission may be applied only to the downlink between the base station and the mobile station, or may be simultaneously applied to the uplink and the downlink. Power control in the case of performing the intermittent transmission operates differently when the intermittent transmission is applied only to the downlink and when the intermittent transmission is simultaneously applied to the uplink and the downlink.

The uplink power control is a method for generating a power control bit (TPC, Transmit Power Control) by measuring a communication quality of the uplink and a mobile station when the generated power control bit is transmitted through the downlink. This method includes receiving and adjusting the mobile station transmit power. Downlink power control is a method for generating a power control bit by the mobile station measures the communication quality of the downlink, and a method for adjusting the base station transmission power by receiving a base station when the generated power control bit is transmitted through the uplink It includes. When describing the power control method during the intermittent transmission, a time point for generating and transmitting the power control bit and a time point for adjusting transmission power by using the received power control bit will be described in terms of the base station and the mobile station.

First, the power control operation when the intermittent transmission operation is performed on the uplink and the downlink will be described.

When the intermittent transmission operation is performed in the uplink and the downlink, since the slots that can be transmitted by the base station and the mobile station exist in a discontinuous pattern, power control should be performed in consideration of the discontinuous pattern. 17A and 17B are diagrams showing a time relationship for power control when intermittent transmission is performed for both uplink and downlink.

Referring to the uplink transmission power adjustment operation of the mobile station, the mobile station extracts a power control bit from a gating on slot received at the most recent valid slot from the base station, i.e., a downlink intermittent transmission position, and the value of the power control bit. Accordingly, the transmission power of the dedicated control channel data of the mobile station is adjusted. In this case, since the valid slot of the downlink and the valid slot of the uplink may be different according to the type of the discontinuity pattern according to the intermittent transmission, the mobile station stores a valid received power control bit, and when the slot becomes available for transmission, Apply and send.

Looking at the power control bit generation and transmission operation for the downlink power control, the mobile station generates a power control bit by measuring the communication quality of the downlink during a valid gating on slot. The generated power control bit is stored and transmitted until it becomes a valid uplink timeslot.

Referring to the base station downlink transmission power adjustment operation, the base station extracts the power control bit from the slot received in the most recent valid slot from the mobile station, that is, the uplink transmitted slot, and adjusts the base station transmit power according to the value of the power control bit. . In this case, since a valid slot of uplink and a valid slot of downlink may be different according to the type of discontinuity pattern caused by intermittent transmission, the mobile station stores a valid received power control bit and becomes a slot that can be transmitted. Apply it and send it.

Looking at the power control bit generation and transmission operation for uplink power control, the base station measures the uplink quality during the valid uplink time slot to generate a power control bit. The generated power control bit is stored and transmitted until it becomes a valid downlink timeslot.

Second, the power control operation when the intermittent transmission is applied only to the downlink in the mobile communication system having the intermittent transmission function will be described.

When intermittent transmission is applied only to downlink in the mobile communication system, the mobile station continuously transmits data of the dedicated control channel, whereas the base station transmits only slot data of intermittent positions selected in units of slot groups as described above. Therefore, the base station has a slot that can be transmitted as described above in a discontinuous pattern, so that both the mobile station and the base station should perform power control in a method different from that of the intermittent transmission. 18A and 18B are diagrams illustrating a time relationship for a power control operation when intermittent transmission is applied only to downlink.

Referring to a mobile station uplink transmission power adjustment operation, the mobile station extracts a power control bit received from the most recently valid slot from the base station, that is, through a slot of an intermittent position selected in slot group units in downlink, and this power control The mobile station transmit power is adjusted according to the bit value. In this case, since a valid slot of downlink and a valid slot of uplink may differ from each other according to the type of discontinuity pattern according to the intermittent transmission, the mobile station stores a valid received power control bit and applies it when the slot becomes available for transmission. Send it.

Looking at the power control bit generation and transmission operation for the downlink power control, the mobile station generates a power control bit by measuring the communication quality of the downlink during the effective downlink slot. The mobile station immediately transmits the generated power control bit to the base station and repeatedly transmits a new power control bit until it is generated. The mobile station repeatedly transmits the power control bits because the base station receives one or more power control bits until the base station becomes a slot that can be transmitted through the downlink. To reduce.

Referring to the base station downlink transmission power adjustment operation, the base station extracts the power control bit received from the mobile station and adjusts the base station transmission power according to the value of the power control bit. At this time, the base station may extract and use the power control bit using one or more power control bits repeatedly transmitted by the mobile station.

As described above, in the embodiment of the present invention, the control channel signal of the uplink is not controlled and the control channel signal of the downlink is not controlled, or the control channel signal of the downlink is not controlled and the control channel signal of the uplink is not controlled. Otherwise, the transmission power of the base station and the mobile station can be controlled even when all data of the dedicated control channels of the uplink and the downlink are controlled.

As described above, the present invention minimizes the time spent in the synchronization re-acquisition process at the base station, increases the interference due to the continuous transmission of the reverse DPCCH, reduces the usage time of the mobile station, and transmits the reverse power control bit to the forward link. There is an effect that can increase the capacity by minimizing the increase of interference.

Claims (31)

In the method for transmitting the control data of the channel of the forward link in the base station of the mobile communication system, Determining, by the base station, whether there is data of forward and reverse link channels; Determining a gating slot position by driving a random position selector when there is no data to transmit for a preset time; And transmitting the control data at the determined gating slot position and not transmitting the control data at the remaining slot positions. 2. The apparatus of claim 1, wherein the data of the channel comprises a row of frames, each frame having a plurality of slots, wherein the slots within each frame are divided into a gating slot group having a plurality of slots. And a gating slot group is determined at a gating slot position. The method as claimed in claim 2, wherein the frame consists of 15 slots and the gating slot group consists of 5 slots. 3. The method of claim 2, wherein the frame consists of 15 slots and each gating slot group consists of three slots. The process of claim 2, wherein the random position selector determines the gating slot position. Multiplying the system frame number by a certain integer to find x; Selecting N bits away from the x chip at the beginning of the scrambling code of the gating slot group in the previous state; And determining the slot position to intercept the slot group by calculating the selected bits with the number of slots constituting the slot group. The method of claim 2, wherein the process of determining the slot position to be controlled by the random position selector is determined by Equation 11 below. G: Gating Slot Group Number G _prev : previous gating slot group number C ⁱ : CFN number of I frame T: Inverse of gating rate The method as claimed in claim 2, wherein the random position selector determines the gating slot position excluding the first gating slot group and the last gating slot group by Equation 12. A _j : Sequence obtained by applying j bit offset in fixed sequence C _i : sequence obtained by repeating CFN S _G : Number of slots that constitute one gating slot group N _G : Number of gating slot groups forming one frame 8. The method as claimed in claim 7, wherein the random position selector determines the gating slot position of the first gating slot group except the first slot. 10. The method of claim 8, wherein the random position selector determines the gating slot position of the last gating slot group as the last slot. The method as claimed in claim 2, wherein the transmitted control data is a pilot symbol and a TPC. The method of claim 2, wherein the transmitted control data And a pilot symbol of a TPC located at a gating slot position of the determined position and a slot located in front of the determined gating slot position. The method as claimed in claim 1, wherein the base station transmits gating information including a gating start time and a gating rate when there is no data to be transmitted through the forward channel for the preset time. In the method of the mobile station of the mobile communication system to transmit the control data of the reverse link, Determining whether there is data of a reverse link channel to be transmitted to the base station by the terminal; Requesting intermittent transmission of control data of a reverse link to the base station when there is no data to be transmitted through the reverse link channel for a preset time; Determining a gating slot position by driving a random position selector when receiving gating information including a gating start time and a gating rate from the base station; And transmitting the control data at the determined gating slot position, and not transmitting the control data at the positions of the remaining slots. A row of frames, each frame having a plurality of slots, the slots within each frame being divided into a plurality of gating slot groups having a plurality of slots, each gating slot group having a plurality of slots, 10. A method of gating data into the plurality of slots within an i-th frame of the frames, the method comprising: A random gating method for transmitting data to a slot position determined by Equation (13) below. j: the number of gating slot groups in the I frame A _j : Sequence related to j-th gating slot group, sequence obtained by applying j bit offset C _i : sequence obtained by repeating the I th CFN S _G : Number of slots that constitute one gating slot group N _G : Number of gating slot groups constituting one frame A row of frames, each frame having a plurality of slots, wherein the slots within each frame are divided into a plurality of gating slot groups having a plurality of slots, each gating slot group including a plurality of slots, 10. A method of gating data into the plurality of slots within an i-th frame of the frames, the method comprising: Determining a gating slot position of the gating slot groups using the gating slot position of Equation 14 below; And transmitting the TPC bits at the determined gating slot position and not transmitting the TPC bits of the remaining slots. Each symbol in Equation 14 is as follows. s (i, j) is the slot position in the j-th gating slot group in the I-th frame A _j : Sequence related to j-th gating slot group, said sequence obtained by applying j bit offset in a given sequence C _i : sequence obtained by repeating the I th CFN S _G : Number of slots that constitute one gating slot group N _G : Number of gating slot groups forming one frame The gating method of claim 15, wherein the gating transmission of the data transmits a TPC of the determined gating slot position and a pilot symbol of a slot located in front of the determined gating slot position. The method of claim 15, wherein determining the gating slot position comprises: And a gating slot position within the first gating slot group of the i-th frame according to Equation 15 below. 16. The method of claim 15, wherein determining the gating slot position further comprises determining a gating slot position within the last gating slot group of the I-th frame as the last slot. In the method for transmitting data of the reverse dedicated control channel having a frame sequence, each frame having a plurality of slots, Receiving gating information indicating gating start time and gating rate from a base station, And transmitting a slot signal of the dedicated control channel in a random pattern during a set period. 20. The method as claimed in claim 19, wherein the random pattern has a gating slot position determined by Equation 16 below. j: the number of gating slot groups in the I frame A _j : Sequence related to j-th gating slot group, sequence obtained by applying j bit offset C _i : sequence obtained by repeating the I th CFN S _G : Number of slots that constitute one gating slot group N _G : Number of gating slot groups constituting one frame In a base station transmitter of a mobile communication system, the data of the traffic channel and the dedicated control channel each have a sequence of frames, and each frame has a plurality of slots. It operates when there is no data to transmit on the forward link for a predetermined time to determine the gating slot position to be intercepted, the slot in each frame is divided into a gating slot group having a plurality of slots when the gating slot position is determined An intermittent position selector that selects an arbitrary slot position within the gated slot group, And an intermittent transmission controller for controlling the slot of the dedicated control channel corresponding to the selected gating slot position. 22. The apparatus of claim 21, wherein the intermittent position selector determines the gating slot position by Equation 17 below. j: the number of gating slot groups in the I frame A _j : Sequence related to j-th gating slot group, sequence obtained by applying j bit offset C _i : sequence obtained by repeating the I th CFN S _G : Number of slots that constitute one gating slot group N _G : Number of gating slot groups constituting one frame 22. The apparatus of claim 21, wherein the intermittent position selector determines the gating slot position according to Equation (18). s (i, j) is the slot position in the j-th gating slot group in the I-th frame A _j : Sequence related to j-th gating slot group, said sequence obtained by applying j bit offset in a given sequence C _i : sequence obtained by repeating the I th CFN S _G : Number of slots that constitute one gating slot group N _G : Number of gating slot groups forming one frame 22. The apparatus of claim 21, wherein the intermittent position selector determines the gating slot position by Equation (19). s (i, j) is the slot position in the j-th gating slot group in the I-th frame A _j : Sequence related to j-th gating slot group, said sequence obtained by applying j bit offset in a given sequence C _i : sequence obtained by repeating the I th CFN S _G : Number of slots that constitute one gating slot group N _G : Number of gating slot groups forming one frame 22. The apparatus of claim 21, wherein the intermittent position selector determines the gating slot position by Equation (20). s (i, j) is the slot position in the j-th gating slot group in the I-th frame A _j : Sequence related to j-th gating slot group, said sequence obtained by applying j bit offset in a given sequence C _i : sequence obtained by repeating the I th CFN S _G : Number of slots that constitute one gating slot group N _G : Number of gating slot groups forming one frame 23. The mobile communication system of claim 22, wherein the intermittent transmission controller transmits a pilot symbol of a slot located in front of the determined gating slot position, and at least one TPC and a TFCI of the determined gating slot position. Transmitter of base station. In the transmitting apparatus of the terminal of the mobile communication system, the data of the traffic channel and the dedicated control channel each has a row of frames, each frame having a plurality of slots, An intermittent position selector that receives gating information including a gating start time and a gating rate from a base station to determine gating slot positions, and divides slots in a plurality of gating slot groups each having gating slot positions; And an intermittent transmission controller which transmits data at the set gating slot position and does not transmit other slot signals of the gating slot group. A row of frames, each frame having a plurality of slots, wherein the slots within each frame are divided into a plurality of gating slot groups having a plurality of slots, wherein the gating slot group includes a plurality of slots; In the apparatus for transmitting data of the plurality of slots in the i-th frame of the frame, A first memory for storing the sequence C _i obtained by repeating the i th frame number; A second memory for storing the j th slot group sequence A _j obtained by the given sequence; A multiplier for performing an exclusive OR operation on the sequences C _i and A _j ; A modulo operator that modulates the exclusive OR operation signal by the number of slots in the slot group to determine the gating slot position in the gating slot group; And an intermittent transmission controller that transmits the data at the determined gating slot position and does not transmit other slots in the gating slot group. 29. The apparatus of claim 28, wherein the intermittent controller transmits a TPC of the determined gating slot position and a pilot symbol of a slot located in front of the determined gating slot position. 29. The apparatus of claim 28, wherein the modulo operator determines a gating slot position such that data is carried in one of the remaining slots except the first slot in the first gating slot group. 29. The apparatus of claim 28, wherein the modulo operator determines the gating slot position such that data is carried in the last slot in the last slot group.